Patent ID: 7978686
Filing Date: 2011-07-12
Classification: H04L,H04M,H04Q

Abstract:
1. In a client device communicatively coupled with an Internet Protocol Automatic Branch Exchange (IPABX) server, a method of activating an IPABX feature from an IPABX feature set using Session Initiation Protocol (SIP) and a feature event package, the method comprising: at the client device, receiving an input indicative of an IPABX feature request for at least one feature from the IPABX feature set; at the client device, creating a SIP event subscription request message in response to the input, wherein the SIP event subscription message includes a feature identification parameter corresponding to the at least one feature from the IPABX feature set; sending the SIP event subscription request message from the client device to the IPABX server to request activation by the IPABX server of the at least one feature from the IPABX feature set; at the client device, receiving from the IPABX server, in response to the SIP event subscription request message, a SIP event notification message, wherein the SIP event notification message includes a status of the IPABX feature request indicating whether the at least one IPABX feature is activated or deactivated; and at the client device, sending to the IPABX server, in response to the SIP event notification message, a SIP successful response message indicating that the SIP event notification message has been received.