Mobile Switching Center MSC
Gateway Mobile-services Switching Center GMSC
file secondary switching center
electronic switching center
electronic data switching center
circuit switching center
center， stor-and-forward switching
BSC Basic message Switching Center
automatic switching center
automatic message switching center
automatic electronic switching center
automatic electronic data switching center
automatic digital message switching center
自动数字电文交换中心
自动数字讯息交换中心
自动数字报文转换中心
automatic data switching center
Mobile Post-doctor Center