This standard specifies the test method for the interface protocol between the centralized service management system (CSMS) equipment and the local service management system (LSMS) equipment in the inter-network number portability service of different operators. This standard applies to CSMS equipment and LSMS equipment that carry numbers between different operators' networks.
YD/T 2534-2013 history
2019YD/T 2534-2019 Inter-network number portability centralized service management system and local service management system interface protocol testing method
2013YD/T 2534-2013 Test method for the protocol of the Interface between CSMS and LSMS for number portabality