Patent ID: 7345997

Claim:
A method of call setup using packet call fixed routing in SGSN of mobile communication network, comprising: checking whether resource information for setting up a packet call fixed route is valid; and processing fixed routing in parallel by a processor that processes a call and a processor that administrates one or more resources, wherein said checking comprises: receiving, at a man-machine interface (MMI) unit, a packet call fixed routing request message including the resource information for setting up the packet call fixed route, the message received from a man-machine interface (MMI) in response to an operator instruction and in TCP/IP format; converting the packet call fixed routing request message in TCP/IP format to an Inter Processor Communication (IPC) format: transmitting the converted packet call fixed routing request message in IPC format to a call trace manager (CTM); and checking whether the resource information in the packet call fixed routing request message is valid by: searching for a main processor (MP) which controls an ATM management assembly (AMA) that corresponds to an AMA number included in packet call fixed routing request message; determining whether the searched MP is in a normal condition; if it is determined that the searched MP is in said normal condition, then determining whether the AMA is in a normal condition; if it is determined that the AMA is in said normal condition, then determining whether a fast ethernet (FE) corresponding to an FE card number, included in the packet call fixed routing request message, is in a normal condition; and if it is determined that the FE is in said normal condition, then determining whether one or more of virtual path identifier (VPI), virtual connection identifier (VCI), or connection identifier (CID) ports are blocked.