Patent KR-100256700-B1 (KR)
Title: Virtual connection setting method of agent system
Inventor: KIM TAE-WAN
IPC: H04L12/28
Filed: 1997-12-17
Granted: 2000-05-15
Abstract: PURPOSE: A dedicated line virtual connection setting method of an agent system is provided to heighten an efficiency of a system of a communication manager network and reduce a load to an exchange by rendering an agent to check in advance a state of a link, a virtual path identifier/virtual channel identification value in use, to express an available band amount information as a managed object and check an available band amount dynamically and perform addition or subtraction in the band amount in use whenever a dedicated line connection set-up is requested. CONSTITUTION: An agent receives a dedicated connection set-up request from a manager, it checks a management state and operation state of an origination link(302). The agent checks the state of a destination link(303). If the state of the destination link is normal, the agent checks the type of the origination link whether it is a user network interface(UNI) or a network node interface(NNI) (304). In the case of the UNI, the agent checks a connection unit is a virtual path(VP)(305). In the case of the VC, the agent checks whether a virtual path identifier(VPI) has been assigned when requested by the manager(306), and if assigned, the agent checks whether it is in use(307). In case that it is in use, the agent checks whether it is for a VP connection(308). The agent checks whether a virtual channel identifier(VCI) has been assigned(309). If so, the agent checks whether the VCI has been used(310). In case that the origination link is the UNI and the virtual path connection, the agent checks whether a VPI has been assigned(313), and if assigned, the agent checks whether it is in use(314). In case that the VPI has not been assigned, the agent checks whether a destination has been inspected(316). In case that the origination link type is the NNI(304), the agent checks whether is it a virtual path connection(317). In the case of the virtual path connection, the agent checks whether a VPI has been assigned(318) and whether it has been used(319). If no VPI has been assigned or assigned but not in use, the agent checks an available band of the link(320). In case that the origination link is the NNI and the virtual channel connection, the agent checks whether a VPI has been assigned(324). If assigned, the agent checks whether it is in use(325). If it is in use, the agent checks whether it is for a virtual path connection(326). If it is not in use for a virtual connection, the agent checks whether the virtual channel identifier has been assigned(329), and if assigned, the agent checks whether a virtual channel identifier is in use(329). If no virtual path identifier has been assigned, assigned but not in use(325), or a virtual channel identifier has not been assigned(328) or assigned but not in use(329), the agent checks an available band of the link(330). The agent compares a requested band and an available band(331), and if the requested band is not greater than the available band, the agent checks whether a destination link has been inspected(332). After inspection is completed, the agent requests a connection set-up from an exchange(334) and receives a response(335). If the connection set-up is successful, the agent reports the normal operation and is terminated(339).