Patent ID: 7974594
Filing Date: 2011-07-05
Classification: H04L,H04W

Abstract:
1. A method for checking connectivity between a Base Station Controller and a Mobile Switching Center during a calling process, the method comprising: loopbacking, by a Mobile Switching Center, a circuit and sending a Connectivity Check command to a Base Station Controller; performing, by the Base Station Controller, a connectivity check according to the Connectivity Check command; if the connectivity check is successful, the Base Station Controller sending a Connectivity Check Success identifier to the Mobile Switching Center to instruct the Mobile Switching Center to cancel a self-loop of the circuit; if the connectivity check fails, the Base Station Controller sending a Clear Request message to the Mobile Switching Center to instruct the Mobile Switching Center to release communication connection and cancel the self-loop of the circuit; and sending, by the Base Station Controller, a request message with a Connectivity Check identifier to the Mobile Switching Center to instruct the Mobile Switching Center to perform the connectivity check; wherein the Base Station Controller is a Base Station Controller at calling side; wherein the Mobile Switching Center is a Mobile Switching Center at calling side; and wherein the request message with the Connectivity Check identifier comprises a CM service request message.