This standard specifies the protocol requirements for communication between media gateways and media gateway controllers, and between media gateways and softswitch equipment based on the ITU-T H.248 standard. This standard applies to Apple phone systems and softswitch systems.
YD/T 1292-2003 history
2011YD/T 1292-2011 Technical requirements for media gateway control protocol based on H.248
2003YD/T 1292-2003 Technical specification for media gateway control protocol based on H.248