<p>A method for switching MSC(mobile switch center)-Pool inter offices includes the following steps: initiating switch function inter offices, and performing a preceding process of the switch inter offices; filling in a SCCP layer address of the MSC in switch gateway end into target SCCP layer address of a switch message center; the MSC in the switch gateway end performing the switch inter offices according to a switching path message in a ternary switch route list after receiving the request message of switch inter offices.</p>
