Abstract:
A conferencing system for an enterprise is disclosed. The conferencing system allows a user conducting a communication session on a personal communication device to transfer the communication session to a local conferencing device. The conferencing system prompts the personal communication device with an option to transfer the communication session to the conferencing device. The system obtains contact information for a multimedia endpoint associated with the remote communication device and initiates a connection between the local conferencing device and the remote multimedia endpoint. The system can also transfer a communication session from a local conferencing device to a portable communication device.

Description:
RELATED APPLICATION DATA 
     This Application claims priority to Provisional U.S. Patent Application Ser. No. 61/127,525 filed 14 May 2008 titled “Method And System For Adapting Control Panel Of A Mobile Terminal Into Control Panel Of An Organizational Conferencing Terminal” by Eran KNAZ, which is hereby incorporated by reference in its entirety. This application is related to application Ser. No. 12/465,558 entitled “Method And System For Initiating A Conference Based On The Proximity Of A Portable Communication Device” by Eran KNAZ, application Ser. No. 12/465,566 entitled “Method And System For Managing Conferencing Resources In A Premises” by Eran KNAZ, application Ser. No. 12/465,574 entitled “Method And System For Providing A User Interface To A Portable Communication Device For Controlling A Conferencing Session” by Eran KNAZ, filed concurrently herewith, each of which is hereby incorporated by reference in its entirety. 
    
    
     FIELD OF THE INVENTION 
     The subject matter of the present disclosure relates to the field of videoconferencing, and more specifically to controlling and routing conferencing sessions between terminals of an organization. 
     BACKGROUND 
     Multimedia conferencing is becoming more and more popular in day to day operation of corporations. An organization can have a plurality of conferencing terminals and/or virtual meeting rooms. The conferencing terminals may be of different types or models or from different vendors and may have its own type of control panel. The diversity of different types of equipment, each using different types of control panels can make learning and using video conferencing equipment challenging 
     A multimedia terminal or a meeting room typically has a unique address (dial in number), which is different than the direct phone number of an employee of an organization, thus creating another obstacle for establishing a multimedia session. Additional information regarding virtual meeting rooms can be found in co-owned U.S. patent application Ser. No. 10/960,337, the entire contents of which are incorporated herein by reference. 
     Furthermore, there are occasions when a user would like to change the type (media) of a current communication session while keeping the continuity of the session. For example, an employee may want to move from one room to another, or to convert an audio point-to-point (P2P) call presently proceeding via his phone extension into a conference session executed in a meeting room or vice-versa. Depending on the dynamics of the communication session a user will appreciate the freedom to change media, connection type, endpoint, etc. Presently, such a change is complicated and requires terminating the existing session and setting up a new session on another terminal (endpoint), which may have an unfamiliar control panel and also requires initiating a new dialing process with a new dial in number, etc. 
     Therefore it would be advantageous to have a single address (dial-in number) per a member or employee of an organization. For example, a phone number of the employee&#39;s personal extension phone can be used as a single dial-in number that can be used for different types (media) of communication sessions. An exemplary personal phone can be a wireless extension IP phone, a cellular phone, etc. It would also be advantageous if the personal phone were adapted to identify the existences and the availability of conferencing resources or facilitate transferring the call from the user&#39;s personal phone to a conferencing terminal (endpoint). 
     In addition, there is a need for a universal control panel for controlling a plurality of types of multimedia terminals. There is also a need to facilitate changing the mode of a communication session, for example, changing from a P2P communication session to a conference, changing from an audio conference to video conference, etc. Such improvements can increase the willingness of users to use and enjoy the benefits of multimedia sessions. It can be appreciated that such improvements would contribute to the experience and productivity of the employees of an organization. 
     SUMMARY 
     The present disclosure provides methods and systems for providing the above-described needs by providing a personal communication device such as a mobile communication device having a single dial-in number that can be used for participating in point-to-point (P2P) audio sessions as well as multimedia conferencing sessions, thereby providing the advantage of one dial in number per employee, regardless of the type of communication. The personal communication device can be a wireless phone IP extension phone, a cellular phone, a common phone, a WiMAX device, a laptop with audio (with or without video communication capabilities), a personal digital assistance (PDA/smart phone) with audio (with or without video communication capabilities), etc. The exemplary system can transfer a call from the personal communication device to a multimedia conferencing terminal and vice versa. In addition the control panel of the personal communication device can be used to control the multimedia conferencing terminal. 
     An exemplary embodiment can include a proximity announcing system (PAS) for identifying the existence and availability of nearby conferencing resources. An exemplary proximity announcing system may include a wireless beacon associated or embedded within a multimedia endpoint. The wireless beacon can periodically transmit information about the associated multimedia endpoint. The information can include the type of the endpoint, its address (dial in number), etc. Alternatively, such information about the associated endpoint can be stored at a database. In such embodiment, the content of the beacon can be an internal (organizational) ID number of the endpoint. The internal ID number can be used as an index or identifier for locating a record in the database that includes additional information regarding the associated endpoint. An exemplary personal communication device can be capable of receiving the beacon&#39;s signal, processing the announcement and informing the user about the existence of the multimedia endpoint. In response, an instruction can be sent, using the control panel of the personal communication device, toward a communication management server. 
     Alternatively, the wireless beacon can be associated with the personal communication device and the receiver for receiving the wireless beacon can be associated with the multimedia endpoint (terminal). In such an embodiment, the endpoint may inform the communication management server that a communication handled by a certain personal communication device is being conducted in the proximity of the endpoint. In response, the communication management server may transmit an informing message (announcement) to the personal communication device informing the user of the option of transferring the present communication session to the nearby endpoint, thus leading him to transfer the session to the endpoint. In one embodiment, the call can be transferred and controlled using the control panel of the personal communication device. Alternatively, if the multimedia endpoint includes the receiver of the beacon signal, the communication management server may send an announcing message to be displayed on the control panel of the personal communication device and not on the multimedia endpoint. Still alternatively, the announcing message can be displayed on both terminals the one of the personal communication device and on the monitor of the multimedia endpoint. 
     In an alternative embodiment, a location announcing beacon can be associated with a room having a multimedia endpoint and the location announcing beacon can transmit a signal that identifies the room. The personal communication device can be adapted to receive and process the beacon signal and retrieve the room ID. Accordingly, the personal communication device can transfer its location to the communication management server and the communication management server can identify which multimedia endpoints exist in the room or near the room. The communication management server can designate a multimedia endpoint as an associated multimedia endpoint and may prompt the user, via the control panel of the personal communication device, to transfer the call to the associated endpoint. Other location identifier methods can be implemented; such as, but not limited to, a GPS unit, processing received signals from one or more WiMax base stations, etc. 
     The communication management server can instruct the associated endpoint or the personal communication device to set up a multimedia P2P communication session, or in case of multipoint conferencing a multipoint control unit (MCU) can be instructed to establish a communication session with the associated multimedia endpoint and the one or more other users that are currently communicating with the employee via his personal communication device. After establishing the multimedia session the communication management server can load a universal multimedia control panel to the personal communication device, converting the control panel (e.g., user interface capabilities like a touch screen) of the personal communication device into a control panel for the associated multimedia endpoint. The communication management server can serve as an intermediate controlling node. The server may receive commands from the personal communication device, convert the command to commands that can be executed by the multimedia endpoint and can send the converted command toward the multimedia endpoint. 
     The communication management server can instruct the endpoint to display a universal multimedia control panel having a menu and a cursor allowing the user to move the cursor along the menu to an appropriate line or icon. The cursor can be controlled using the control panel of the personal communication device via the communication management server. Several control schemes of the soft key can be used, depending on the media that is served by the terminal. For example, one type of control scheme can be used for audio sessions, another control scheme can be used for videoconferencing sessions, another for controlling an MCU, etc. The audio scheme can include mute, volume, hold, etc. The video scheme may additionally include camera control, layout selection etc. The same audio and/or video control scheme can be used independently of the module/vendor of the audio and/or the multimedia terminal that is currently controlled. The communication management server can be adapted to translate the commands according to the requirements of the endpoint and to transfer the commands to the endpoint. 
     After transferring the sessions to the multimedia endpoint, the user can have options to transfer the session back to his personal communication device and move to another room, where the session can be transfer to another multimedia endpoint. 
     Controlling different types of multimedia endpoints through a user&#39;s personal communication device and using a universal GUI and a common scheme per media will improve the user experience and increase the utilization of the conferencing system. Since the personal communication device is a personalized device, it can be configured to include the user&#39;s personal data (contacts, meetings etc.) and also may access the organization database for contact data (buddy-list) or any other personal data. A generic control panel can be adapted to the control panel of the personal communication device and can be displayed over the control panel of the personal communication device. 
     An exemplary communication management server can be a middleware server that is connected to other communicational controllers. It can be connected to a private IP-phone switching box (IP-PBX), to one or more MCUs, management servers (such as MS server, for example), and one or more multimedia endpoints; etc. The middleware server can be capable of routing calls to and from multimedia endpoints and IP phones via controlling the organizational MCUs, IP-PBX and the plurality of multimedia endpoints. In addition it can add or remove one or more participants to or from a currently conducted session. 
     These and other aspects of the disclosure will be apparent in view of the attached FIGs. and detailed description. In the disclosure the terms view and layout may be used interchangeably. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Exemplary embodiments of the present invention will be more readily understood from reading the following description and by reference to the accompanying drawings, in which: 
         FIG. 1   a  illustrates an organization premises having a variety of electronic communication systems; 
         FIG. 1   b  is a simplified timing diagram illustrating exemplary processes handled by different nodes for controlling and transferring a P2P communication session from an IP phone to a multimedia endpoint; 
         FIG. 1   c  is a simplified timing diagram illustrating exemplary processes handled by different nodes for controlling and transferring a multipoint conferencing session from an IP phone to a multimedia endpoint via an MCU; 
         FIG. 2   a  is a simplified block diagram of an exemplary communication management server (CMS) that is implemented by a middleware server (MWS) while conducting conferencing sessions; 
         FIG. 2   b  is a simplified block diagram of an exemplary PAS transmitter (PAST); 
         FIG. 2   c  is a simplified block diagram of an exemplary PAS receiver (PASR); 
         FIG. 3  is a flowchart illustrating relevant processes for handling a nearby task; 
         FIG. 4  is a flowchart illustrating the steps for transferring an audio session into a video session and controlling the session via a control panel of a phone. 
     
    
    
     DETAILED DESCRIPTION 
     Turning now to the figures in which like numerals represent like elements throughout the several views, exemplary embodiments, aspects and features of the present disclosure are described. The purpose of the drawings is to describe exemplary embodiments and not for production or limitation. Therefore, features shown in the figures are chosen for convenience and clarity of presentation only. Time diagrams shown in the figures are chosen for convenience and clarity of presentation and are not necessarily shown to scale. 
     An endpoint may provide speech only, speech and video, or speech, data and video communications. Exemplary endpoints include Polycom VSX 7000, HDX 9004, conference phone VTX 1000, etc., by Polycom, Inc. As used herein, the term multimedia endpoint refers to an endpoint on a network capable of providing real-time, two-way audio/video communications and may also provide data communication with other endpoints or with a multipoint control unit (MCU). An MCU is a conference controlling entity located at a node of a network or in a terminal, which receives and processes multiple media channels from access ports according to certain criteria and distributes them to the connected channels. Examples of MCUs include the RMX 2000, MGC-100 (Polycom Inc.). Other MCUs can be embedded within a multimedia endpoint. Some MCUs are composed from two logical units a media controller (MC) and a media processor (MP). A more thorough definition of an endpoint (terminal) and an MCU can be found in the International Telecommunication Union (“ITU”) standards, such as but not limited to the H.320, H.324, H.323, and Session Initiation Protocol (SIP). Additional information regarding the ITU standards can be found at the ITU website www.itu.int information regarding SIP can be found in www.ietf.org. 
       FIG. 1   a  is a block diagram illustrating an organization premises  100  having a multimedia system  110 , an internet protocol (IP) audio system  130 , a circuit switch audio system  120 , a management system  140  a proximity announcing system (PAS)  160  and a communication management server (CMS)  150 . In the example of premises  100 , CMS  150  is implemented by a middleware server (MWS) that interfaces between those systems. Within each system cloud  110 ,  120 ,  130  and  140 , elements of the system can communicate via a local network that can be a packet-switched network and/or circuit switched network. Those skilled in the art will appreciate that the number of systems, elements within a system as well as the CMS  150  shown in  FIG. 1  are only exemplary and not limiting. It will be appreciated that the term organization premises is not limited to a physical location or structure. Exemplary audio system  120  can run over a circuit switch network such PSTN and among other elements may include a plurality of audio endpoints (AEP)  122 . Exemplary AEP  122  can be POTS (plain old telephone service) telephones, conference room telephone such as VTX1000™ (Polycom Inc) etc. In addition, audio system  120  can include a private switching box PBX  124 . PBX  124  can be a private switching box for routing calls between the different AEP  122 , for audio conferences, and as interface between AEP  122  and the world outside of cloud  120 . 
     IP audio system  130  can run over an IP network and may include a plurality of IP audio endpoints (IPAEP)  132 . Exemplary IPAEP  132  can be IP Phones (IPP) such as but not limited to Sound Point IP 4000™ (Polycom); personal computers (PC), laptop computers, etc. capable of enabling audio sessions over an IP networks, etc. Some of the IPP can be wireless phones which can be used as personal communication device of an employee. Such a personal communication device can be associated with a proximity receiver  166 , which is disclosed later on. In addition cloud  130  can comprise an IP-PBX  134 . IP-PBX  134  can be used as a private switching box for routing calls between the different IPAEP  132 , for audio conferences, and as an interface between the IPAEP  132  and the world outside cloud  130 . 
     Multimedia system  110  can include one or more multipoint control units (MCU)  114  and a plurality of multimedia endpoints (MMEP)  112 . Some of the MMEP  112  can run over an IP network, some over a circuit switch network, and some over both networks. Some of the MMEP  112  can also be used as an IPAEP  132  and vice versa. Some of the MMEP  112  can be used as an AEP  122  and vice versa. MCU  114  can be used for conducting multipoint audio and/or video and/or multimedia sessions between the different MMEP  112  and between some of the AEP  122  and/or some of the IPAEP  132 . Point to point (PTP) multimedia session can be handled directly by the MMEP  112  or via MCU  114  if transcoding is needed. Transcoding is needed if the two endpoints are running over networks that use different communication protocols or the endpoints are using different compression standards, different bite rate, etc. In such cases MCU  114  serves as a gateway for converting protocols and/or compression standards or as interfaces between different networks, etc. Some of the MMEP  112  can be associated with a proximity announcing transmitter (a beacon)  163 , which is discussed in more detail below. Embodiments of the disclosure are described as transferring a communication session from a personal communication device to a MMEP, but it should be realized that a communication session can be transferred from a personal communication device to any conferencing device, such as an audio conferencing endpoint, using the methods described herein. 
     Management system  140  is used for common operation of the organization and may include a scheduling server (SCHS)  142  such as MICROSOFT EXCHANGE SERVER™ (Microsoft) and an employee database (EDB)  144  that can include information on the employees of the organization including information such as names, employee&#39;s ID number, list of security permissions, email address, telephone numbers, IP address, buddy list, etc. Management system  140  may include other servers that are not shown, for example email servers, organizational web sites, etc. 
     Exemplary proximity announcing system  160  (PAS) can be a wireless system that is installed in the organization premises  100  to identify situations in which a personal communication device is in proximity with a multimedia endpoint. An exemplary PAS  160  can be based radio frequency (RF) technology using common protocol such as Bluetooth or a proprietary protocol. An alternate exemplary embodiment can be based on infra red technology (IR), or any other wireless technologies. PAS  160  can be unidirectional, having a plurality of PAS transmitters (PAST)  163  and a plurality of PAS receivers (PASR)  166 . Alternatively, (not shown in the drawings) PAS  160  can be bidirectional, system having a plurality of proximity transmitters/receivers. Other exemplary PAS  160  can be based on commercial methods that are capable of identifying location and/or proximity. Exemplary PAS  160  can be based on GPS receivers, cellular phones, WiMAX, etc. 
     Exemplary disclosed embodiments can be implemented in various configurations. For example, in PAS  160  illustrated in  FIG. 1  each PAST  163  is associated with a MMEP  112  and each PASR  166  is associated with a personal communication device  132 . An exemplary PAST  163  can transmit a unique signal (beacon) that identifies its associated MMEP  112 . The unique signal can point to an identification number (ID) of the associated MMEP  112 . The ID can be an organizational unique number, a MAC address, an IP address, etc. Each PAST  163  can be calibrated in such a way that the power of its transmitted signal is limited and/or directed to a certain space. An exemplary PAST  163  can be adapted to transmit its beacon only when its associated MMEP  112  is capable of participating in a communication session. Exemplary PAST  163  can sit on top of its associated MMEP  112 , for example. Alternatively, an exemplary PAST  163  can be embedded within its associated MMEP  112  as one of the components of the MMEP. Alternatively, PAST  163  can be associated with a visual indication of its ID and/or a visual indication that is currently communicating with a PASR  166  via CMS  150  or directly, when PAS  160  is bidirectional. Yet in another exemplary embodiment a sign can be place in association with a MMEP  112  indicating an ID of the MMEP. In such embodiment, a user can use his personal communication device control panel to transfer the call from the personal device to the MMEP according to its ID number. After transferring the call the user can control the multimedia session via the control panel of his personal communication device. 
     An exemplary PASR  166  can be associated with a personal communication device  132 . It can be attached or embedded within the associated personal communication device  132 . An exemplary PASR  166  can be capable of receiving beacons that are transmitted by the plurality PAST  163 , processing the received signals, and identifying the ID number that is carried by the strongest beacon, i.e., the one that its received signal has the highest power. Alternatively, PASR  166  can send a list of received beacons to CMS  150  and allow the server to select an appropriate MMEP. Each entry in the list may include indication about the power of the received signal and its associated ID number. PASR  166  can be capable of communicating the received ID number to the CMS  150 . The connection with CMS  150  can be established directly by PASR  166  or via its associated personal communication device  132 . Upon receiving the information from PASR  166  CMS  150  can inform the user of the relevant pair (PASR  166  and its associated personal communication device  132 ) about the option to transfer the call. The information can include a list of optional MMEP  112 , a selected MMEP  112 , etc. Informing the user can be execute via the user&#39;s personal communication device  132 . 
     Other exemplary PAS (not shown in the drawing) may use other configurations. For example, an exemplary PAS can use room identifiers instead of MMEP identifiers. In such an embodiment each PAST can be associated with a room and an exemplary CMS can have a cross index table. Each entry in the cross index table can be associated with a room ID and information about one or more MMEPs that exist in the room. An exemplary commercial room identifier transmitter can be a Bluetooth beacon device. 
     In an alternative exemplary configuration of a PAS, the PASRs can be associated with an MMEP or a room and PASTs can be associated with the personal communication devices. In such exemplary configuration the PASR can be adapted to communicate with the CMS directly or via its associated MMEP and inform the CMS that a certain personal communication device is in proximity with a certain MMEP or that the certain personal communication device has entered to the room. The CMS, based on its cross index table, can inform the user about the option to transfer the call to an appropriate MMEP. The message can be sent to the personal communication device to be displayed on its control panel. Alternatively or additionally a visual message can be displayed on the appropriate MMEP. 
     In yet another alternate configuration, a PAST can be an employee RFID card and a PASR, which can be associated with a room or a MMEP, can be adapted to receive and process the employee RFID signal. The notification that the employee is in proximately with a certain MMEP or in a certain room can be sent to the CMS. The CMS can consult with IP-PBX  134  to determine whether the employee&#39;s personal communication device is currently active. If so, the CMS can inform the employee that the call can be transferred to a nearby MMEP. 
     In another exemplary configuration in which the IP audio system  130  is used as the personal communication network, the IP audio system can be adapted to process received RF signature (a keep alive signal) of each personal communication device near different base stations (access points) in the organization. A controller of the wireless network can be adapted to process information related to the received RF signature from one or more RF base stations and compare current information to previously received information to determine a course of movement by the personal communication device. The information can be RF power and/or direction, for example. After processing the data a decision can be made regarding an expected location of the personal communication device. The location information can be sent to the CMS. Alternatively, the CMS may receive the raw data about the RF signatures and may process the data by itself. In such a configuration special modules for PAST and PASR are not needed because the IP-audio system is adapted to execute the tasks of the PAS. The operation of PAS  160  and PAST  163  and PASR  166  is further discussed below. 
     Communication management server (CMS)  150  can be installed in the organizational premises  100  and can communicate with the one or more MCU  114 , IP-PBX  134 , PBX  124 , SCHS  142 , EDB  144 . In other embodiments, CMS  150  additionally can communicate directly with some of the IPAEP  132 , MMEP  112 , and AEP  122 . PASR  166  can communicate with CMS  150  directly or indirectly via an associated personal communication device  132  or an associated MMEP  112 . The communication between CMS  150  and the different elements of premises  100  can be conducted over an IP network or any other data communication network that is used over the organizational premises  100 . In the present description an IP network is used as an exemplary network for the communication between CMS  150  and the other elements of premises. 
     In one embodiment, CMS  150  can be implemented as an independent server. In other embodiments CMS  150  can be embedded within a network device of the organizational premises  100  such as, but not limited to, MCU  110 , IP-PBX  130  or PBX  124 . CMS  150  can be adapted to interface between the different communication systems ( 110 ,  120  and  130 ) and PAS  160 . According to the requirements of the organization CMS  150  can be adapted to establish and manage multipoint multimedia conferencing sessions over the one or more communicational networks  110 ,  120  and  130  and/or transfer calls from one network to another. CMS  150  can upgrade a call from an audio to multimedia over an associated MMEP  112  and provide a single dial-in number per employee. The single dial-in number can be the dial-in number of the employee&#39;s personal communication device  132 . Furthermore, the CMS  150  can transfer the call from the personal communication device  132  to any MMEP  112  of the organization as well as controlling the multimedia session via the control panel of the personal communication device. CMS  150  is discussed in more detail below in conjunction with  FIGS. 1   b &amp; c ,  2 ,  3  and  4 . 
       FIG. 1   b  is a simplified timing diagram showing exemplary P2P communication session started over a personal communication device  132  ( FIG. 1   a ). The figure illustrates the timing of an exemplary processes for controlling and converting the P2P audio session into a P2P multimedia session over a nearby MMEP  112  ( FIG. 1   a ). The processes can be executed by different nodes along the communication line. Four time axes are illustrated: T 1   b ; T 2   b , T 3   b  &amp; T 4   b . T 1   b  is associated with the IP phone  132  and with its associated PASR  166  ( FIG. 1   a ). T 2   b  is associated with a (session initiation protocol) SIP switch (not shown in the drawings) installed in the organization premises  100  for switching SIP communication sessions to the appropriate destination. In some embodiments, the SIP switch (SIP-SW) can be a separated entity; in other embodiments it can be embedded within another network node such as but not limited to IP-PBX  134 , MCU  114 , etc. T 3   b  is associated with CMS  150  ( FIG. 1   a ) and T 4   b  is associated with the nearby MMEP  112 . 
     Initially at T 0  the session is being conducted over the personal communication device  132  while its associated PASR  166  is waiting to receive a beacon signal from a nearby MMEP  112 . Slightly before T 1 , one or more beacon signals are received by the associated PASR  166 . At PASR  166  the beacon signals can be detected, analyzed and a decision is made about an ID number of the nearby MMEP  112 . The decision can be based on the power of the received beacon signal, for example. In other embodiment, at the end of processing the received beacon signals a list of ID numbers and their associated power can be created. The results of the processing can be embedded into a ‘nearby MMEP message’. The massage can comply with TCP/IP protocol for example. At T 1  the message is transferred to CMS  150  over a direct connection that is set between PASR  166  and CMS  150 , alternatively the message can be sent from PASR  166  to its associated personal communication device  132  and from there to CMS  150 . For example, the message can be sent via the associated phone. The personal communication device  132  can be adapted to inform the user about the ‘nearby MMEP  112 ’ and let the user determine whether to send the ‘nearby message’ toward the CMS  150  or not. 
     On receiving the ‘nearby message’ CMS  150  may start processing the nearby message for identifying a nearby MMEP and determining whether the nearby MMEP  112  is available to handle the session. If the ‘nearby message’ includes a list of MMEP IDs and the power of their beacons, CMS  150  may process the list for determining which MMEP is the best nearby MMEP. Several methods can be used. An exemplary method can compare power and select the strongest one. Other methods may store few last ‘nearby message’ that were received from the same PASR. The current received data can be processed in view of the stored ‘nearby message’ to determine the course of movement of the user and accordingly select the appropriate MMEP. Still alternatively, PAS system  160  can be calibrated by mapping the MMEP  112  with the received signals of PASTs  163  in the organization  100 . At the end of the calibration process a MMEP cross index table (MCIT) can be created and stored at CMS  150 . Each entry in the MCIT can be associated with a MMEP  112  and the fields of each entry can reflect one or more combinations of power of the beacons of PAST that are received by a PASR when the PASR is near the relevant MMEP. In such an embodiment CMS  150  can be adapted to search the MCIT looking for a matching entry. The matching entry can include a combination of stored power of beacons that is similar to the receive list. The MMEP that is associated with the entry can be defined as the nearby MMEP. 
     After determining which MMEP is the nearby, CMS  150  can check whether the nearby MMEP is available to get the call. CMS  150  can check, with EDB  144  ( FIG. 1 ), whether the user is authorized to use the nearby MMEP. Furthermore, CMS  150  can check with other servers such as SCHS  142  ( FIG. 1   b ) whether the nearby MMEP is reserved for a session in the near future. CMS  150  can check also with the nearby MMEP whether it is busy or in standby, etc. If the nearby MMEP is available then at T 1 ′ a prompt, such as banner, can be sent to be displayed on the control panel of the personal communication device, prompting the user to transfer the session to the nearby MMEP  112 . The banner can be used as a soft key, which can be selected by the user for requesting to transfer the session to the nearby MMEP  112 . At T 2 , in response to the prompting the user can press the soft key and a request to transfer the session to the nearby MMEP is sent toward the CMS  150  ( FIG. 1 ) 
     At T 3 , an instruction can be sent to the SIP-SW requesting it to switch the call to the nearby MMEP. In the example of  FIG. 1   b  if the other side of the session is using an MMEP, then a negotiation session can be initiated between the nearby local MMEP and the remote MMEP. At the end of the negotiation session the session can be transferred at T 5  from the personal communication device to the nearby MMEP and the current session is terminated at T 7 . At T 9  CMS  150  can load a generic MMEP control panel into the control panel of the personal communication device  132  allowing the user to control the multimedia session via his personal communication device. If the far end is using an audio only device, the audio signal is transferred to the nearby MMEP and the nearby MMEP acts as an audio endpoint. The user at T 11  may use the loaded generic control panel to instruct the CMS  150  to convert the call to a P2P multimedia session. The instruction can include the dialing number of a MMEP that is associated with the other participant. At T 13  CMS  150  can set up a connection with the nearby MMEP and instruct it to dial to the peer&#39;s MMEP. 
     If the far end uses a personal communication device that is associated with a PASR  166 , then the other side can transfer the call to a nearby MMEP that is identified by his personal communication device. In an alternate embodiment the CMS  150  or the nearby MMEP can sense that the call has been transferred from the personal communication device to the nearby MMEP. Upon sensing that the call has been transferred the CMS  150  can instruct the nearby MMEP to call a MMEP that is associated with the other party. Calling information of the other party&#39;s MMEP can be found in a database associated with the organization. 
     During the multimedia session the user may wish to move to another room and at T 17 , using the control panel of the user&#39;s personal communication device  132 , an instruction is sent to CMS  150  asking to retrieve the call back to the personal communication device. CMS  150  at T 19  sends an instruction to the SIP switch requesting to transfer the audio connection of the session from the nearby MMEP to the personal communication device and to terminate the video connection. At T 21  a new negotiation session can be initiated between the personal communication device and the other MMEP of the far end. At the end of the negotiation session the audio connection of the session is transferred to the personal communication device  132 . The video connection with the far end is terminated and at T 25  the nearby MMEP is released. At T 23  CMS  150  can replace the generic multimedia control panel of the personal communication device with a generic control panel of an audio session. 
     At T 27  the session is terminated and an indication is sent to the CMS  150 . In response, a common control panel of the personal communication device is loaded T 30  to the personal communication device and the resources at the CMS  150  that were allocated to the session are released. 
       FIG. 1   c  is a simplified timing diagram of an exemplary communication session initiated as a P2P audio session over a personal communication device  132  ( FIG. 1   a ) and converted to a multipoint multimedia session (a multimedia conference) using a nearby MMEP  112  and MCU  114 . The processes can be executed by different nodes along the communication line. Five time axes are illustrated: T 1   c ; T 2   c , T 3   c , T 4   c  &amp; T 5   c . T 1   c  is associated with the IP phone  132  and with its associated PASR  166  ( FIG. 1   a ). T 2   c  is associated with IP-PBX  134  ( FIG. 1   a ). T 3   c  is associated with CMS  150  ( FIG. 1   a ). T 4   c  is associated with MCU  114  ( FIG. 1   a ) and T 5   c  is associated with the nearby MMEP  112  ( FIG. 1   a ). 
     Initially at T 100 , the session is conducted over the personal communication device  132  while its associated PASR  166  is waiting to receive a beacon signal from a nearby MMEP  112 . Slightly before T 101 , one or more beacon signals are received by the associated PASR  166 . Processing of the received one or more beacon signals can be similar to one of the methods described above in conjunction with the period of T 0  and T 1  in  FIG. 1   b . At the end of the process, a ‘nearby message’ is sent at T 101  via the personal communication device to IP-PBX  134  and from there at T 103  to the CMS  150 . Alternatively, the message can be sent directly from the PASR  166  to the CMS  150 . The message can include information about one or more nearby MMEP  112 . 
     On receiving the ‘nearby message’ CMS  150  may start a process for converting the P2P audio session into a multimedia conference. The process can include a similar process as described above for determining which MMEP is the nearby MMEP. CMS  150  can check whether the nearby MMEP is available for the call. If the nearby MMEP is not available a denial message can be sent toward the personal communication device and displayed on its control panel. If the nearby MMEP is available, at T 103 ′ a banner can be sent to be displayed on the control panel of the personal communication device, prompting the user to transfer the session to the nearby MMEP  112 . The banner can be used as a soft key, which can be selected by the user for requesting to transfer the session to the nearby MMEP  112 . At T 104  the soft key is selected requesting to transfer the session to the nearby MMEP, then information regarding the MMEPs of the far end participants is collected. Information regarding the far end participants can be entered by the user as part of the nearby message or as an associated message that follows the nearby message alternatively the information can be sent in response to a question from CMS  150 . The information regarding the conference can include a dial in number for dialing to the MCU  114  for an ongoing conference; or a list of dial in numbers of the other participants or names of participants that dialing information to their MMEP exist in EDB  144  ( FIG. 1   a ), for example. 
     After collecting the information regarding the far end participant(s), an instruction can be sent T 104 ′ to MCU  114  requesting it to set a multimedia conference based on the collected information. At T 105  an instruction can be sent to the nearby MMEP instructing it to call the MCU using the dial in number. Alternatively the MCU can be instructed to dial out to the nearby MMEP  112  to add it to the conference. At T 107  CMS  150  can send a generic MMEP control panel to IP-PBX  134  and from there, at T 108 , the generic multimedia control panel is loaded into the control panel of the personal communication device  132 . The generic multimedia control panel allows the user to control the multimedia conference via his personal communication device. The user at T 109  may use the generic control panel and send a request to move the camera toward IP-PBX and from there at T 110  the command is sent to CMS  150 . CMS  150  can convert the generic command into a move camera command that matches the requirements of the nearby MMEP  112  and the appropriate command is sent at T 115  toward the nearby MMEP. 
     At T 120  the user may wish to change layout from a current layout of 2×2 to a switching layout, for example. As known in the art, a 2×2 layout is a layout in which video images of four participants is displayed and a switching layout is a layout in which the image of the current speaker is displayed over the screen of the MMEP. The generic command of selecting a switching layout is selected via the control of the personal communication device. The generic instruction is transferred T 120  to IP-PBX and from there at T 122  the generic command is transferred to CMS  150 . CMS  150  can convert the generic command to match the relevant MCU  114  and the converted appropriate command is sent at T 124  toward the MCU  114 . 
     At T 134  the session is terminated and an indication is sent to IP-PBX  134 . The termination command is transferred T 136  to CMS  150 . CMS  150  can send T 138  &amp; T 140  the common control panel to the personal communication device  132  via IP-PBX. An end of session command with release of resources can be sent at T 124  &amp; T 144  toward the nearby MMEP  112  and the MCU  114  (respectively) and resources of the CMS  150 , which were allocated to the session, are released. Alternatively, if personal communication devices  132  and CMS  150  can communicate directly with each other the intermediate stapes in which IP-PBX is involved for transferring data between the personal communication devices and the CMS can be skipped. 
     There are occasions in which point-to-point multimedia session that was established according to the time diagram of  FIG. 1   b , for example, can be upgraded to a multipoint session when a third party is calling one of the two participants of the point-to-point session, that has an exemplary personal communication device with a PASR  166 . An exemplary time diagram for such a process can be similar to  FIG. 1   c  with few modifications that illustrates the upgrading from point-to-point session into multimedia session by involving an MCU, for example. 
       FIG. 2   a  is a block diagram of an exemplary CMS  200 , which is implemented as a middleware server.  FIG. 2   a  illustrates the modular nature of the CMS  200  with relevant functional modules needed for describing the operation of the PAS  160  ( FIG. 1 ) with the different communicational and management systems for establishing and controlling one or more multimedia conferences. An exemplary CMS  200  can be divided into three sections: a basic set of components  210 , a solution specific set of components (SSSC)  230 , and ongoing-communication-session-contexts (CSC)  2210 . An exemplary CSC  2210  can be allocated per each communication session that involves a PAS transaction and/or a multimedia session. CSC  2210  can be composed from a combination of logical modules that are included in a bank of available logical modules (BOALM) and are required for conducting the communication session. SSSC  230  can include a set of logical modules that are configured according to the needs of the organization in which CMS  200  is installed. 
     An exemplary basic set of components  210  can include a bank of available logical modules (BOALM), database (DB)  222 , shared memory (SM)  224 , decision matrix engine (DME)  226 , dispatcher module (DM)  228 , a communication module (CM)  293 , and a PAS network interface module (PASIF)  297 . CMS  200  can include other modules that are not shown in  FIG. 2   a , for example web services modules, etc. The BOALM can include several groups of logical modules  211  to  215 , each group including a plurality of logical modules having the same functionality, but adapted to different types of equipment. As used herein, a logical module can be a physical entity or a logical entity that is composed from physical entities allocated to the logical module by the DM  228  when the logical module is needed in a context  2210  associated with a new conference. A logical module may be software, including a computer program, routine, or code, for example. Although three logical modules in a group are illustrated in BOALM, the present disclosure is not limited to a particular number and the presented configuration is intended to be illustrative of an exemplary configuration. 
     An exemplary BOALM includes a group of endpoint controller and drivers (EPCD)  211 , a group of personal communication device (IP-Phone, for example) adapter modules (IPPAM)  213 , a group of context manager applications (CMA)  214 , and a group of MCU controllers (MCUC)  215 . Other logical modules not illustrated can include a group of SIP components (SIPC) and/or a group of H.323 gatekeeper modules, etc. 
     An exemplary dispatcher module (DM)  228  can act as a managing module of the CMS  200  and controls the operation of the entire CMS  200 . DM  228  may get requests for initiating or terminating a communication session and accordingly may allocate resources for a context that will be associated with the communication session or release resources of a context that is associated with a terminating session. The request can be received from a scheduling server  142  ( FIG. 1   a ) via its API  236 , from one of the PASR  166  ( FIG. 1   a ) via PASIF  297 , MCU  114  via the MCU API  237 , etc. Based on the request, DM  228  can allocate resources from BOALM  210  according to the request, create a context with those resources, and associate the appropriate logical modules with relevant locations in the site DB. For example, the location of information on a certain MMEP in the site section of DB  222  is transferred to the relevant EPCD  211 . DM  228  may use the services of DME  226  to determine the best configuration of the context. DM  228  is described in more detail below, following an overview of the other modular components of the CMS  200 . After establishing and initiating the context, DM  228  may receive status information on the operation of the context. Based on this information, DM  228  may consider replacing some of the logical modules with others or terminating the context or part of the context and releasing their resources back to BOALM  210  or to SM  224 , etc. 
     The group of EPCD  211  can include driver applications for a plurality of types of endpoints. Exemplary endpoints include VSX800™ and VSX7000™ (Polycom Inc.). For a given conference, one or more EPCDs  211  are selected or created by DM  228  and assigned to a context  2210  associated with that conference according to the type of endpoints that are to be connected in the conference. An exemplary EPCD  211  can be adapted to communicate with its associated endpoint via CM  293  and inform the user to dial a certain ISDN number or an IP alias of an MCU for joining the conference. Alternatively, the endpoint can be adapted to be controlled by the EPCD  211  and automatically dial to the MCU  114  ( FIG. 1 ) to join a conference. Exemplary methods for instructing an endpoint to set a connection with an MCU are disclosed in U.S. patent application Ser. No. 10/941,790, the entire contents of which are incorporate herein by reference. If the associated endpoint cannot be instructed or informed to call an MCU, then EPCD  211  can send the dialing number of the endpoint to a queue assigned to the relevant MCUC  215 . The MCUC  215  can retrieve the information from its queue and instruct the MCU to dial the endpoint. Such an endpoint can be a POTS telephone, for example. 
     In exemplary embodiments in which a PASR  166  ( FIG. 1   a ) or PAST  163  are associated with a MMEP and are communicating via the MMEP an exemplary EPCD  211  can include controller and driver module for the associated PAST or PASR. The operation of an exemplary controller and driver module for a PASR is discussed more below in conjunction with IPPAM  213 . 
     Upon initiation, each EPCD  211  can be introduced to locations in the shared memory SM  224  and/or DB  222  of the queues to/from which EPCD  211  can store or retrieve information, instructions, and or statuses relevant to its associated endpoint. In addition, EPCD  211  is informed of locations in the system section of the DB  222  (SSDB) from whence information on the type of the endpoint can be retrieved. Exemplary information can include bit rates, compression standards, etc. In addition, EPCD  211  can be informed of the location in the active sessions of the DB  222  (ASDB) from whence information on its current connected endpoint can be gathered. Exemplary information can be IP address of the relevant endpoint, ISDN number, bandwidth of the actual communication line, display size, etc. 
     During establishing a multimedia session an exemplary EPCD  211  can be assigned to a context that will be associated with a conference. The assigned EPCD  211  can be introduced by DM  228  to locations in the shared memory SM  224  and/or DB  222  of the queues to/from which EPCD  211  can store or retrieve information, instructions, and/or statuses relevant to the session. Exemplary queues can be the queues of the relevant EPCDs  211  and the relevant CMA  214  that are assigned to the same conference. An exemplary CMA  214  can be adapted to communicate with the endpoints that participate in the conference via the relevant EPCDs  211 . The communication can include transferring of instructions that were received from the context manager application (CMA)  214  and targeted to one or more endpoints. Exemplary instructions can instruct certain endpoints to set a connection with a certain dial in number of an MCU, etc. The instruction can be placed in the queue that is associated with the relevant EPCD  211  by the CMA  214  associated with the conference. The CMA  214  distributes the command to the appropriate EPCDs  211  via their queues and waits for receiving status information on the success of setting the connection. 
     The group of IPPAM  213  can include driver applications for a plurality of types of personal communication devices such as IP-phones  132  ( FIG. 1 ). Exemplary IP-phones  132  can include Sound Point IP  501 ,  302 , etc. (Polycom Inc.). For a given conference, one or more IPPAM  213  are selected or created by DM  228  and assigned to a context  2210  associated with that conference. The one or more IPPAM  213  match the type of IP-phones  132  that will be connected to the conference. An exemplary IPPAM  213  can be adapted to communicate with its associated IP-phones  132  via CM  293 . Alternatively or additionally IPPAM  213  can be adapted to communicate with its associated IP-phones  132  via IP-PBX  134  ( FIG. 1   a ) using the API to the IP-PBX  238 . The communication with the IP-Phone can prompt the user to dial a certain number or an IP alias of an MCU for joining the conference. Alternatively, the IP-phones  132  can be adapted to be controlled by the IPPAM  213  and automatically dial the conference number. If an associated IP-Phone cannot be controlled by IPPAM  213 , then IPPAM  213  can send the address of the IP-Phone to a queue assigned to the relevant MCUC  215 . The MCUC  215  can retrieve the information from its queue and instruct the MCU to dial the IP-Phone. 
     During a communication session an exemplary IPPAM  213  can have several tasks. One task can be associated with the media. Such a task can be used in a communication session in which the IP phone is used as a terminal of the communication session. During establishing a multimedia session an exemplary IPPAM  213  can be assigned to a context, which will be associated to a conference. The assigned IPPAM  213  can be introduced by DM  228  to locations in the shared memory SM  224  and/or DB  222  of the queues from which it can store or retrieve information, instructions, and/or statuses relevant to the session. Exemplary queues can be the queues of the relevant EPCDs  211 , IPPAM  213  and CMA  214  that are assigned to the same conference. An exemplary CMA  214  can be adapted to communicate with the IP-phone that participates in the conference via the relevant IPPAM  213 . The communication can include transferring of instructions that were received from the context manager application (CMA)  214  and targeted to the relevant IP-Phone. Exemplary instructions can include instructing a certain IP-phone to set a connection with a certain dial in number of an MCU. The instruction can be placed, by the relevant CMA  214 , in the queue that is associated with the relevant IPPAM  213 . The CMA  214  distributes the command to the appropriate IPPAM  213  via their queues and waits for receiving status information on the success of setting the connection. 
     Another task of IPPAM  213  to configure the control panel of its associated IP-Phone for controlling the communication session and enabling the user to convert the session into a multimedia session over a nearby MMEP. In addition, the user can control the operation of the nearby MMEP  112  ( FIG. 1   a ) via the control panel of the personal communication device using a generic control panel for MMEP. Furthermore, the user by using the control panel can retrieve the session back to the IP-phone. The controlling task can be initiated upon receiving an indication from PAS  160  ( FIG. 1   a ) via PASR  166  ( FIG. 1   a ) and PASIF  297  that the PASR is nearby one or more MMEPs  112 . The nearby message can be sent directly by PASR  166  over a connection that is established via CM  293  with PASIF  297 . Alternatively the connection can be established via the IP-Phone  132  ( FIG. 1   a ) that is associated with the relevant PASR. The IP-Phone can communicate directly with CM  293  and from there to PASIF  297 . Alternatively, the IP-Phone can communicate with CM  293  via IP-PBX  134  ( FIG. 1   a ) and API  238 . 
     Upon receiving the nearby message PASIF  297  can parse the message, determine which IP-Phone is associated with the relevant PASR  166  and which MMEP  112  ( FIG. 1   a ) is the nearby-MMEP. The decisions can be based on stored index tables in DB  222  or SM  224 , for example. Each entry in the index table can be associated with an ID of a MMEP or personal communication device and it can include information about its type, dialing number and/or IP address, communication parameters such as bandwidth, compression standard etc. The index tables can be loaded during installation of the management system at a certain site, for example. Alternatively, the index tables can be updated when a new endpoint is added to the network. The new endpoint can be registered at CMS  200 , for example. The information about the associated IP-Phone and the nearby MMEP can be transferred to DM  228 . 
     In response DM  228  can initiate a context  2210  for the session, allocate an IPPAM  213  that matches the type of the associated IP-Phone and add it to the context. DM  228  can allocate an EPCD  211 , which matches the type of the nearby MMEP and add it to the context. A CMA  214  can be allocated to the session for managing the operation of the allocated EPCD  211  and IPPAM  213 . CMA  214  may prompt the user via IPPAM to convert the session into a multimedia session on the nearby MMEP, and to control the session via the control panel of the IP-phone. Prompting the user can be done by generating a generic nearby-menu for offering the user to use the nearby MMEP. The nearby-menu is transferred to the associated IPPAM that converts the generic nearby-menu according to the requirements of the IP phone and loads it via CM  293 . The loading can be executed directly with the IP-Phone or via IP-PBX  134  ( FIG. 1   a ). The user selections can be sent from the IP-phone to IPPAM  213 , parsed by IPPAM  213  and transferred to CMA  214 . 
     An exemplary PASIF  297  can use noise reduction methods and error reducing methods before determining that a nearby MMEP is really nearby. An exemplary PASIF  297  can be adapted to verify that a received nearby message repeats several times along a predefine period of time (few seconds up to few tens of seconds) before determining that the personal communication device is near a certain MMEP. In order to avoid jumping from one MMEP to another MMEP, an exemplary PASIF  297  can be capable of changing an already defined nearby MMEP (a first one) with another MMEP (a second one) only if the nearby message that points the second MMEP is received along a period that is twice longer than the period that was used for defining the first MMEP, for example. 
     There are occasions in which PASIF  297  may receive several different nearby messages from the same PASR  166  ( FIG. 1 ) during the same monitoring period. It can happen when a user is in a room that has two or more endpoints, for example. The room can include a personal MMEP on a personal computer and a dedicated MMEP. One embodiment of PASIF  297  can transfer the ID of the two MMEP to the allocated IPPAM  213 . The allocated IPPAM  213  can generate a nearby control panel according to the requirements of the personal communication device. The control panel includes the two options and lets the user to select his preferred MMEP as the nearby MMEP. In an alternate exemplary embodiment, PASIF  297  may consider with DME  226  for selecting automatically a preferred nearby MMEP. The preferred MMEP can be the dedicated MMEP since it can have higher resolution or a bigger screen than the personal MMEP, for example. 
     Some exemplary embodiments may use a power mapping method for mapping the rooms of the organization. An exemplary mapping procedure can be implemented after the installation of PAS  160 . An administrator of the organization may measure the received power of one or more PAST  163  in several locations in each room that includes a MMEP. At the end of the process a mapping table is generated. Each entry in the map can be associated with a MMEP and include a combination of MMEPs and their power. The combination can be sorted from the stronger received signal to the weaker received signal. More information about the exemplary mapping method is provided below in conjunction with the description of the solution specific set of components  230 . 
     In an embodiment that uses a mapping method, a nearby message can include an ID number of a MMEP and its received power. PASIF  297  can be capable of sorting the nearby messages that were received from the same PASR  166  during the same measuring period. The sorting can be done based on the received power. At the end, a combination of ID numbers sorted according to their power is created. The combination is compared to the mapping table and an entry is selected based on the combination. The entry can be used for defining the nearby MMEP. 
     An exemplary CMA  214  can be created by DM  228  and be assigned to a context to be associated with a communication session for managing the session and enables establishment of a conference or a multimedia session. Upon initiation each CMA  214  can be introduced to locations in the shared memory SM  224  and/or DB  222  of the queues to/from CMA  214  and can store or retrieved information, instructions and or statuses that are relevant to its operation. Exemplary queues include queues of the relevant EPCD  211 , the relevant MCUC  215 , the relevant IPPAM  213  assigned to the same context, PASIF  297  and the DME  226 . An exemplary CMA  214  can be adapted to perform several tasks that are associated with the session that include communicating with the user via generic control panels; transferring the session from a personal communication device to a nearby MMEP via its associated EPCD  211  or to an MCU via an MCUC  215 . Furthermore, CMA  214  may get information on the required layout of the conference and transfer the layout information to the MCUC  215 . More information on CMA  214  is provided below in conjunction with  FIGS. 3 and 4 . 
     MCUC  215  can be assigned to a context associated with a conference for managing the operation of an MCU that is associated with the same conference. MCUC  215  can be created by DM  228  and assigned to a context that will be associated to the conference. Upon initiation each MCUC  215  can be introduced to locations in the shared memory SM  224  and/or DB  222  of the queues to/from MCUC  215  and can store or retrieve information, instructions and/or statuses that are relevant to its operation. Exemplary queues can be queues of the relevant EPCD  211 , the relevant IPPAM  2213  and the relevant CMA  214  that are assigned to the same conference. An exemplary MCUC  215  can be adapted to communicate with the MCU  114  ( FIG. 1 ) via API  237 . The communication can include transferring instructions received from the conference manager application (CMA)  214  and targeted to the MCU. Exemplary instructions include instruction to set a connection with certain endpoints. The instruction can be placed in the queue associated with MCUC  215  by the relevant CMA  214 . The MCUC  215  sends the command to the relevant MCU, waits for receiving status information on the success of setting the one or more connections with the endpoints, and sends the status information to the CMA  214 . 
     The database (DB)  222  can include several sections, including a system section (SSDB), a site DB, and active sessions DB (ASDB). The SSDB may include information on different type of communication devices such as different terminals IP-Phones, multimedia endpoints, controllers (MCU, PBX, IP-PBX), scheduling system, management system, etc. The SSDB can be prepared by the vendor of CMS  200  and can be sorted according to device type. The site DB may include information relevant to a current site (the organizational premises in which the CMS is installed) including user names, addresses (dial-in numbers, IP address, User&#39;s address book, etc.), type of endpoints, topology, etc. The site DB can be sorted according to user&#39;s name, controller ID number, etc. In addition it can include MMEP mapping table as well as indexing tables that delivers for each ID of MMEP  112  ( FIG. 1   a ) or a personal communication device  132  ( FIG. 1   a ) its communication parameters. Such parameters include type, module, dial in number or IP address, type of protocols, etc. This section can be adapted and configured during the installation of the system and can be updated from time to time by an administrator of the organization. The ASDB is a section in the DB in which each of the different modules of the CMS (multimedia, interfacing applications or business logic applications) store information used for their operation and store results of their operation to share with other modules. This section can be organized according to active sessions. 
     SM  224  can be implemented by a random access memory (RAM) that is used for interfacing between the different modules that are currently active. SM  224  may contain a bank of queues. Each queue can be associated with a current active module of the CMS. From such a queue each active module can retrieve information or a pointer to the next information or instruction that the module will need during its next process. The information itself can reside in the DB  222 . This pointer and/or the information are placed in the queue by another active module that used or created this information. In some exemplary embodiments SM  224  can be embedded as a logical part in DB. 
     DME  226  may include a bank of algorithms that can be used by dispatcher  228 , PASIF  297  or CMA  214  when a decision is needed. For example DME  226  may be requested to determine if a room has two MMEP which MMEP can be selected as nearby MMEP. The decision can be based on user experience, occupation of the MMEP, reservation of a certain MMEP, etc. In addition DME  228  can be used for determining if a user of PASR  166  that sent the nearby message is eligible to upgrade his session into multimedia session using the nearby MMEP, etc. 
     CM  293  is in charge on the communication between the CMS  200  and other equipment. For implementing data communication over a network using the Open System Interconnection (OSI) reference model, CM  293  is adapted to handle the first four layers: the physical layer  1 , link layer  2 , network layer  3 , and the transport layer  4  (the TCP stack). In addition CM  293  may include a H.323 Gatekeeper Stack for working in H.323 protocol, and/or SIP stack for working in SIP protocol and/or HTTP server for working also as a web-server. In another embodiment CM  293  may include a communication module for communicating over ISDN, regular phones etc. 
     After installation of the system, the MCS  200  and PAS  160  ( FIG. 1   a ) can be configured to operate in the particular organization. The solution specific set of components (SSSC)  230  provides functional modules that are specifically needed to solve the requests/needs of the organization in which the CMS  200  is installed and for adapting the operation of CMS  200  to the needs of the systems that are installed in the organization premises. Exemplary SSSC  230  may include one or more application program interfaces (API)  236 ,  237  &amp;  238 , business logic modules such as reservation module  233 , policy module  234  and impromptu conference module  235  and administrator tools. Exemplary administrator&#39;s tools can include a graphical human interface (GUI)  231  to be used by an administrator of the organization and PAST power mapping application (PPMA)  232 . 
     An API may be needed for each of the systems that are installed in the organizational premises  100  ( FIG. 1   a ). For example if the multimedia system  110  ( FIG. 1 ) includes two or more types of MCUs  114 , an API  237  for each type of MCU is needed. An API  238  is needed for each type of PBX  124  and/or each type of IP-PBX  134  that are installed in premises  100 . Furthermore an API  236  may be needed for interfacing with a scheduling server  142  and EDB  144 . 
     Exemplary business logic modules are adapted to the requirement of the organization and its one or more policies if such exist. For example, reservation module  233  may include a set of rules defining employees&#39; rights for scheduling a multimedia session. Policy module  234  can include security limitation for preventing access to multimedia conferences, maximum length of a multimedia session, type of layouts, policy for selecting one or more speakers in a conference, maximum number of conferees in a conference, etc. Impromptu conference module can include information regarding who is entitle to start an impromptu session over which MMEP, in which hours, etc. 
     Administrator&#39;s GUI  231  can also be adapted to the requirements of the organization and may include the logo of the organization, the same icons used in the organization site, same maintenance page-format that is used by the administrator of the network, etc. The GUI may include forms for associating the plurality PAST  163  ( FIG. 1   a ) with MMEP  122  ( FIG. 1   a ) or with rooms as well as forms for associating PASR  166  ( FIG. 1   a ) with personal communication devices  112  ( FIG. 1   a ). 
     PAST power mapping application (PPMA)  232  can be capable of generating a mapping table in which each entry is associated with a room or a MMEP. Each entry can be defined by a combination of received power that is observed with several PASR  166  ( FIG. 1   a ) at a certain room, for example. After initiating the mapping application  232  an administrator is requested to get one or more personal communication devices  132  with its associated PASR  166  and to visit the rooms that have one or more MMEPs  112 . At each room the administrator can walk around while the PASRs  166  that are involved in the mapping process send their nearby messages to PASIF  297  which process the message and transfer the ID number of the PAST with their received power to PPMA  232 . 
     Per each room PPMA  232  can calculate an average power of a signal received from each PAST  163 . The average power can be the average of the plurality of PASR  166  and messages that were received from plurality of locations in the room. Then per each room a list is prepared; each entry in the list includes the ID number of a PAST (or associated MMEP or associated room) and the average power of its signal. The list can be sorted according to the average power and the combination of the sorted ID number can define the room. After measuring all the rooms, PPMA  232  can create a mapping table in which each entry can be associated with a room, for example, and each entry include the combination that was calculated during the measuring step. Each entry may include one or more MMEP  112  that can be used as a nearby MMEP when a user enters this room. During day to day operation as PPMA idles it may be initiated from time to time by the administrator. Other embodiments may use other mapping methods for PAS  160  to the organization premises  100 . 
     Each of the plurality of session contexts  2210  is associated with a communication session currently conducted by CMS  200 . Although three session contexts  2210  are illustrated, the presented configuration is intended to be illustrative only; any number of session contexts could exist. An exemplary context can be initiated when a nearby message from a new PASR  166  is received. The session can be initiated by DM  228  and may include a IPPAM  2213  assigned to a personal communication device associated with the PASR  166  that sent the nearby message, an EPCD  2211   a  assigned to the nearby MMEP mentioned in the nearby message, and a context manager CMA  2214 . During the session the user of the personal communication device can upgrade the session to a multimedia conference with six participants, for example. Upgrading the session and adding participants can be implemented using the generic control panels loaded to the control panel of the personal communication device via IPPAM  2213 . 
     Out of these six conferees, two conferees have endpoints type ‘A’ and four conferees have endpoints type ‘B’, as illustrated by two endpoint type ‘A’ EPCDa  2211 A and four endpoint type ‘B’ EPCDb  2211 B. To control the MCU  114  ( FIG. 1   a ) of the organization (an MGC  50  in this example) context  2210  includes an MCUC  2215  that is adapted to control an MGC  50 . CMA  2214  manages the activity of the context. CMA  2214  controls the relevant endpoints via EPCDa  2211 A or EPCDb  2211 B, the MGC  50  via MCUC  2215  and API  237 , and the PBX via API  238 . More information on the operating of an exemplary CMS is described below in conjunction with  FIGS. 3 and 4 . Exemplary middleware is described in U.S. patent application Ser. No. 11/278,847, the entire contents of which are incorporated herein by reference. 
       FIG. 2   b  is a block diagram of an exemplary PAST  240 .  FIG. 2   b  illustrates relevant elements of PAST  240 . An exemplary PAST can include an administrator interface module (AIM)  242 , a PAST collision avoidance module (PTCAM)  244 , a wireless transmitter  246  and an antenna  248 . An exemplary PAST  240  can be associated with a MMEP, such as MMEP  112  ( FIG. 1   a ). Alternatively PAST  240  can be embedded within a MMEP  112 . In other exemplary configurations PAST  240  can be associated with a room. In such embodiment PASIF  297  ( FIG. 2   a ) may use an index table in which each entry is associated with a room ID and contains information about one or more MMEP  112  which are associated with the room. The index table can be prepared by an administrator of network  100  ( FIG. 1 ), using GUI  231  ( FIG. 2   a ), during installation of PAS  160  ( FIG. 1 ). Yet in an alternate configuration of PAS  160 , an exemplary PAST  240  can be associated with a personal communication device such as IPP  132  ( FIG. 1   a ); alternatively it can be embedded within a personal communication device. In other exemplary configurations PAST  240  can be associated with a user, using an employee RFID card, for example. In such embodiment PASIF  297  ( FIG. 2   a ) may use an index table in which each entry is associated with a user ID and contains information about his personal communication device. 
     Administrator interface module  242  is used by the administrator of system  100  ( FIG. 1   a ) for associating a PAST  240  with an MMEP or a personal communication device or a user according to the implementation of PAS  160 . An exemplary AIM  242  can be a set of switches by which the administrator defines the ID number of the PAST  240 . In alternate embodiment of PAST  240  AIM  242  can be a preloaded flash memory loaded with an ID number of PAST  240 . Yet in another embodiment of PAST  240  the ID number can be loaded via the administrator&#39;s computer. After loading the ID number to PAST  240  the administrator using GUI  231  adds an entry to the index table in which the association of the PAST ID and according to the implementation of PAS  160  a user or a personal communication device or MMEP is stored. The index table can be stored in DB  222  ( FIG. 2   a ). The PAST ID number stored in AIM  242  is used by PTCAM  244 . In an alternate exemplary embodiment AIM  242  can be a network connection for remotely configuration 
     PAST collision avoidance module, PTCAM  244 , is used for preventing collision of information received from different PAST by the same PASR. Several collision avoidance methods can be implemented by different embodiments of PAS  160  ( FIG. 1 ). An exemplary PAS  160  can use frequency sharing method in which each PAST  240  transmit in a unique frequency. The frequency reflects the ID number associated with the PAST and stored by AIM  242 . In such embodiment PTCAM can be a synthesizer that generates a RF signal in a frequency that matches the stored ID value of PAST  240 . A plurality of collision avoidance methods can be implemented by different embodiments of the present invention. Some embodiments may use time devision methods (TDM), others may use snooping methods. In other embodiments the collision avoidance methods may comply with common wireless protocols for short range communication or proximity. Exemplary short range protocols can be Bluetooth, WiFI, etc. 
     Wireless transmitter  246  can be an RF transmitter using an RF antenna  248  using a single carrier or a plurality of carrier wherein each carrier is associated with the PAST ID number. Alternatively, PAS  160  wireless transmitter  246  can be infrared transmitter using a lens as antenna  248 . The modulation can be amplitude modulation (AM), frequency modulation (FM), phase modulation (PM), or any other type of modulation. 
     Other exemplary embodiments can use common wireless protocols for short range communication or proximity. Exemplary short range protocols can be Bluetooth, WiFI, etc. 
       FIG. 2   c  is a block diagram of an exemplary PASR  260 . An exemplary PASR  260  can include an antenna  262 , a wireless receiver  264 , a processor  266 , and a PASR communication module (PRCM)  268 . An exemplary PASR  260  can be associated with a personal communication device, such as IPP  132  ( FIG. 1   a ); alternatively it can be embedded within a personal communication device. In other exemplary configurations PASR  260  can be associated with a MMEP, such as MMEP  112  ( FIG. 1   a ). Alternatively PASR  260  can be embedded within a MMEP  112 . In other exemplary configurations PASR  260  can be associated with a room. In such embodiment PASIF  297  ( FIG. 2   a ) may use an index table in which each entry is associated with a room ID and contains information about one or more MMEP  112  associated with the room. The index table can be prepared by an administrator of network  100  ( FIG. 1 ), using GUI  231  ( FIG. 2   a ), during installation of PAS  160  ( FIG. 1 ). 
     In one exemplary embodiment wireless antenna  262  and receiver  264  are based on IR technology. Therefore the antenna can be an array of lenses while the receiver can be an IR detector. If PAS  160  ( FIG. 1   a ) is based on RF technology receiver  264  match the collision avoidance and method and transmission technologies that is used. For example if the collision avoidance method is frequency deviation, then receiver  264  can scan the frequency band from one carrier to the other searching for a received signal. When a signal is detected the scanning holds for a certain period in which the signal is detected, the power of the received signal is measured and the detected signal with its power indication as well as the frequency of the received signal are transferred to processor  266 . In some exemplary embodiments the carrier signal is not modulated with the ID number since the frequency of the received signal can reflect the ID number of the PAST that sent the signal. After transferring the information to the processor the scan can continue and the receiver can move toward another carrier if exist. At the end of the receiving frequency band the scanning start from the beginning. One scanning cycle can be referred as measuring period or monitoring period. 
     Other exemplary embodiments can use common wireless protocols for short range communication or proximity. Exemplary short range protocols can be Bluetooth, WiFI, etc. 
     An exemplary processor  266  can be adapted to receive the detected signal and its power from the receiver. The detected signal can be processed and converted into the ID number. Then the ID number and its power are transferred to the communication module  268  to be sent toward PASIF  297 . Further processing of the received nearby massages is implemented by PASIF  297  ( FIG. 2   a ) as disclosed above. In other embodiments of PASR  260  the processor  266  can be adapted determine which received ID number is the dominant and can be defined as the nearby MMEP. Processor  266  can average several consecutive received signals of the same PAST in order to determine an average power value of the PAST. The average received power of all received PASTs are compared and the one with highest power can be defined as the nearby MMEP. In such embodiment only the final decision is transferred to the communication module  268 . 
     Communication module  268  receives the data from processor  266  and manipulates it according to a format of a nearby message that complies with the communication protocol used by CM  293  ( FIG. 2   a ) and PASIF  297 . In one embodiment the nearby message is transferred to the associated personal communication device and from there is sent toward CM  293 . In another exemplary embodiment communication module  268  is capable of establishing a direct connection with CM  293  on which the nearby message is transferred. 
       FIG. 3  illustrates relevant processes for handling a nearby and control task  300 . The nearby and control task  300  can be implemented by a PASR  166  ( FIG. 1   a ) and its associated personal communication device  132  ( FIG. 1   a ). Steps  302  to  312  can be executed by a PASR  166 ; steps  320  to  332  or  344  can be executed by the associated personal communication device  132 . The task can be initiated  302  upon power-on of PASR  166 . During its initiation  306  PASR  166  can introduce itself to its associated IPP  132  and CMS  150  and it can be updated with new data that is related to the communication system  100  ( FIG. 1   a ). After the initiation process, method  300  can start a beacon receiving process  310 . The beacon receiving process  310  depends on the protocol used by PAS  160  ( FIG. 1 ). 
     Per each received signal the decoded data and its power information are written in a list. At the end of the measuring period method  300  proceed to stage  312 . 
     At step  312  the data and power of each received beacon signal is processed. At the end of the process a list of PAST&#39;s ID numbers with their power is created. PAST&#39;s ID number can reflect its associated MMEP or room, for example. In one exemplary process  312  the list of couples: ID number and its power, is processed into a nearby message according to the communication protocol use by PASR  166  and CMS  150  and sent toward PASIF  297  ( FIG. 2   a ). Further processing of the received nearby massages is implemented by PASIF  297  ( FIG. 2   a ) as disclosed above. In other embodiments process  312  can be adapted to determine which received ID number is the dominant. The MMEP associated with the dominant PAST can be defined as the nearby MMEP. Exemplary process  312  can average several consecutive received signals of the same PAST in order to determine an average power value of each PAST  163 . Then, the average received powers of all received PASTs are compared and the one with highest average power can define the nearby MMEP. In such embodiment only the dominant ID number is converted into a nearby message and is transferred toward PASIF  297  ( FIG. 2   a ). 
     Another exemplary nearby task (not shown in the drawing) may use a modified method  300 . PASR  166  may run in a loop between modified steps  310  and  312 , independently on the ongoing activity of the reset of the modified process  300 . In such exemplary embodiment, after sending the nearby message, modified method  300  can wait for a certain period, a measuring period, and may return to step  310  starting a new measuring cycle. The measuring period can be a configurable time period. In some embodiments the measuring period depends on protocol used by PAS  160 . The followed nearby messages can be processed by CMS  150  for determining a change in the location of the user and controlling the communication session according to the new location of the relevant PASR  166 . 
     After sending  312  the nearby message, method  300  can proceed and be executed over the associated personal communication device  132  ( FIG. 1   a ). IPP  132  can wait  320  for a response to the nearby message. The response can be sent by CMS  150 . The response can be initiated by PASIF  297  ( FIG. 2   a ) and adapted to the requirement of the personal communication device by IPPAM  2213  ( FIG. 2   a ) that was allocated to the context  2210  ( FIG. 2   a ) that was assigned the session and sent via CM  293  ( FIG. 2   a ) directly or via IP-PBX  134  ( FIG. 1   a ) to IPP  132 . The personal communication device can parse  322  the response and determine whether a nearby MMEP  112  is available. If  330  no, which means that the nearby MMEP  112  is busy or in off position or reserved for another session, etc., the session with CMS  150  can be terminated  332  and an indication can be displayed to the user indicating that no MMEP is available and method  300  returns to step  310  starting, over PASR  166 , a new cycle of searching a nearby MMEP. An exemplary method  300  can be adapted to return to step  310 , if a response to a nearby message is not received  320  after a certain waiting period. 
     If  330  a nearby MMEP  112  is available, a message can be sent  336  to the personal communication device prompting the user to upgrade the session into a multimedia session over the nearby MMEP. In some embodiments a list of optional nearby MMEP can be delivered allowing the user to select one of them. Then method  300  may wait  340  for the user request. In some embodiments, process  336  can be adapted to initiate a new searching cycle (steps  310 - 312 ) for a nearby MMEP to verify the location of the user. If  337  no request is received after the waiting period method  300  can return to step  306  and initiating the beacon receiver process. 
     If  337  a user&#39;s request to transfer the session, which was preformed via the control panel of the personal communication device  132 , is received then the convert task  400  ( FIG. 4 ) is initiated  338 , and a multimedia generic control panel is loaded  338  to the control panel of the personal communication device. In some embodiments, a loading of a generic control panel can include optional keys to be configured by the user. After loading the generic control panel, method  300  can wait  340  for receiving a user request. Upon receiving a user request  342 , the request is processed according to the communication protocol used between IPP  132  and CM  293  ( FIG. 2   a ). The processed message is transferred directly or via IP-PBX  134  to CM  293  and from there the request is transferred  344  to IPPAM  2213  to be translated into a format that can be parsed and be executed by CMA  2214  ( FIG. 2   a ) that is assigned to the same CSC  2210 . Then, method  300  returns to step  340  waiting for the next user command/request. 
       FIG. 4  is a flowchart illustrating a process  400  for upgrading an audio session into a video session over a nearby MMEP  112  ( FIG. 1   a ), for example. Process  400  may be initiated  402  by the users of a personal communication device  132  ( FIG. 1   a ) and PASR  166  after be informed that a nearby MMEP  112  is available to participate in a communication session (steps  330  and  336  in  FIG. 3 ). In one exemplary embodiment process  400  can be executed by DM  228  ( FIG. 2   a ) that manages the resource allocation of CMS  200  ( FIG. 2   a ). In an alternate exemplary embodiment process  400  can be executed by a CMA  2214  that was allocated to the CSC  2210  ( FIG. 2   a ), which was assigned to the session at step  336  ( FIG. 3 ) as result of processing the nearby message. In such embodiment CMA  2214  can be capable of allocating resources that are associated with its session. 
     The user by using the generic control panel requesting to convert the ongoing audio session that is currently conducted over his personal communication device  132  ( FIG. 1   a ) into a multimedia session over the nearby MMEP  112 . In the case that the audio session is audio conferencing the audio conference can be converted to a video conference between the same conferees using their MMEPs. The request can be transferred via the IP-PBX  134  ( FIG. 1   a ) or directly to CM  293  ( FIG. 2   a ), which processes the packet according to the communication protocols. The processed request is transferred to IPPAM  2213  that further processes the request and translates it to the format that is used over the CMS  200  ( FIG. 2   a ). 
     At step  404  a decision is made whether the requester is authorized to start a multimedia session over the nearby MMEP  112  ( FIG. 1   a ). The decision can be received from the impromptu conference module  235  ( FIG. 2   a ) at SSSC  230  ( FIG. 2   a ) and/or by using the policy database  234  ( FIG. 2   a ). If the requester is authorized to start a multimedia session, then information on conferees that are currently associated with the audio session can be retrieved from IP-PBX  134  ( FIG. 1   a ) via API  238  ( FIG. 2   a ). Information on the MMEPs of the conferees can retrieved  406  from the site section of the DB  222 . If there is no information in DB  222 , the organization management system  140  ( FIG. 1   a ) can be consulted via API  236  ( FIG. 2   a ) for a buddy list that is associated with the requester. The buddy list can be searched for getting communication parameters that are relevant to the conferees&#39; MMEP. Conferees for which information on their MMEP does not exist may be connected to the multimedia session as audio conferees and can be added later using manual dialing. 
     If  404  the requester is not authorized to start an impromptu conference, then a denial indication is sent  416  to the requester via IPPAM  2213  ( FIG. 2   a ). The denial message can be an IVR message or visual indications on the generic control panel, in some embodiments, the denial message can be displayed over the screen of the nearby MMEP, for example. The denial message can be sent through CM  293  ( FIG. 2   a ) directly or via API  238  ( FIG. 2   a ) and IP-PBX  134  ( FIG. 1   a ). Each intermediate module adapts the message according to is functionality. CM  293  processes the message according to the communication protocols over system  100  ( FIG. 1   a ) and API  238  translates the message to the format used over the IP-PBX  134 . After sending the denial indication method  400  terminates  440 . Conveying the information between the internal modules of CMS  200  ( FIG. 2   a ) can be done by placing the information in the queue that is associated to the relevant module. The queues can be part of SM  224  ( FIG. 2   a ), for example. 
     Returning to step  406 , after collecting information on the MMEPs  112  that is associated with the one or more participants of the session, other than the requester, a resource allocation process is initiated  408 . An exemplary resource allocation process can be conducted in consideration with the MCU  114  ( FIG. 1   a ) via its API  237  ( FIG. 2   a ) and with DME  226 . The allocation can be based on the information about the endpoints. Such information includes the type of networks that can be used (circuit switch or IP), type of compression standards, bit rates etc. DME  226  can recommend a best setup and topology for the session. The selection can be considered with the MCU  114  via its API  237 . If resources are not available the allocation process may continue and DME  226  may offer another configuration, etc. This process can proceed until DME  226  may determine  410  that there is no any possible setup that can be supported by the current available resources. Then method  400  may proceed to step  416  and deny the request and be terminated  440 . 
     If resources are available  410 , the allocation process  408  can be terminated and method  400  can proceed to step  412  and the CSC  2210  ( FIG. 2   a ) that was allocated to the session in response to the received nearby message (step  312  in  FIG. 3 ) can be upgraded to support the required multimedia session. Appropriate logical modules from the BOALM  210  ( FIG. 2   a ) are allocated to the CSC. The appropriate logical modules can include EPCD logical modules  211  that match the type of the relevant endpoints, (two EPCDA  2211 A and four EPCDB  2211 B,  FIG. 2   a ), an MCUC logical module  2215 , and CMA  2214  can be upgraded to include multimedia controlling capabilities. The logical modules can be informed about the parameters of the session, including participant ID numbers, conference ID number, relevant queues, etc. This information can be used during retrieving the appropriate data from DB  222  and SM  224  ( FIG. 2   a ). The logical modules of the upgraded context can be initiated and CMA  2214  may start a process for establishing the multimedia, multipoint session. For example, a list of dial-out numbers of endpoints, to which the allocated MCU has to dial, is sent to the MCU via MCUC  2215  and API  237  ( FIG. 2   a ) of the MCU. In parallel, each of the MMEP that can dial-in to the MCU, can get a dial-in number via the appropriate EPCDA  2211 A or EPCDB  2211 B. In addition a list of conferees, who will continue the session as audio conferees, can be transferred to IP-PBX  134  ( FIG. 1   a ) via API  238  ( FIG. 2   a ) or SIP-SW (not shown in the drawings) with a request to transfer their media via the MCU  114 . 
     A generic multimedia control panel can be created  414  and sent to the control panel of the personal communication device IPP  132  ( FIG. 1   a ) via IPPAM  2213  and CM  293  ( FIG. 2   a ) and method  400  can wait  420  to receive a request from the user via the generic control panel. In some embodiments, a loading of a generic multimedia control panel can include optional keys to be configured by the user. 
     A user&#39;s request from the generic control panel of the personal communication device  132  is transferred directly or via IP-PBX  134  to CM  293  and from there to IPPAM  2213  to be translated into a format that can be parsed  422  by CMA  2214  ( FIG. 2   a ) that is assigned to the same CSC  2210 . If  430  the request is for a multimedia setting such as to add conferee or change layout, etc., parameters of the change are retrieved  438  from the request and accordingly resources are allocated to support the needs of the user. For example if the request is to add to the session a new conferee having a MMEP, then an appropriate EPCD  211 , which matches the new conferee&#39;s MMEP, can be allocated to the context. Dialing information and other communication parameters, such as bandwidth, which are associated with the new MMEP can be loaded to the allocated EPCD. In addition an MCUC  2215  can instruct the MCU  114  ( FIG. 1   a ) to add resources for handling the additional conferee. After loading the parameters, the allocated resources can be initiated for executing the user&#39;s request. 
     At step  439  CMA  2214  can determine if a new generic control panel has to be loaded to the personal communication device  132 . The new control panel, if needed, can be adapted to match the new setup. If a new control panel is needed, the appropriate generic control panel can be transferred to IPPAM  2213  to be translated into a format that complies with the needs of the IPP  132 . The translated control panel is transferred to the personal communication device and method  400  returns to step  420  waiting for the next user&#39;s request. If a new control panel is not needed, then method  400  returns to step  420 . 
     If  430  the request is for retrieving the session back to the personal communication device  132 , then CMA  2214  can request  432  the IP-PBX  134  or a SIP-SW (not shown) to transfer the audio of the session back to the personal communication device. The request can be sent via the appropriate API, such as API of IP-PBX  238  ( FIG. 2   a ). The session between the IPP-Phone and CMA  2214  can be terminated and allocated resources can be released. Releasing the resources can depend on the continuation of the multimedia session. In the case that the multimedia session continues although the requester continues the session on his phone, then the resources of CSC  2210  ( FIG. 2   a ) and MCU  114  ( FIG. 1   a ) may remain. In the case that the entire multimedia session is terminated then the resources of the relevant CSC  2210  can be released as well as the resources of the MCU and the relevant endpoints. Furthermore, instructions to set the relevant PASR can be sent  434  to the relevant PASR and method  400  can return to step  310  in  FIG. 3  waiting for the next beacon signal. 
     If  430  the request is for terminating the communication session, then the resources that were allocated to the communication session in the relevant CSC  2210  as well as resources in the MCU  114  and/or IP-PBX  134 , MMEP  112 , bandwidth resources, etc. can be released  436  and method  400  ended  440 . 
     In the present disclosure, the words “unit,” “element,” “module” and “logical module” can be used interchangeably. Anything designated as a unit or module can be a stand-alone unit or a specialized or integrated module. A unit or a module can be modular or have modular aspects allowing it to be easily removed and replaced with another similar unit or module. Each unit or module may be any one of, or any combination of, software, hardware, and/or firmware. Software of a logical module can be embodied on a computer readable medium such as a read/write hard disc, CDROM, Flash memory, ROM, etc. In order to execute a certain task a software program can be loaded to an appropriate processor as needed. 
     In the description and claims of the present disclosure, “comprise,” “include,” “have,” and conjugates thereof are used to indicate that the object or objects of the verb are not necessarily a complete listing of members, components, elements, or parts of the subject or subjects of the verb. 
     It will be appreciated that the above described apparatus, systems and methods can be varied in many ways, including, changing the order of steps, and the exact implementation used. The described embodiments include different features, not all of which are required in all embodiments of the present disclosure. Moreover, some embodiments of the present disclosure use only some of the features or possible combinations of the features. Different combinations of features noted in the described embodiments will occur to a person skilled in the art. Furthermore, some embodiments of the present disclosure can be implemented by combination of features and elements that have been described in association to different exemplary embodiments along the disclosure. The scope of the invention is limited only by the following claims.