Integrated Services Digital Network (ISDN); Signalling Systim No. 7; Operation Mainterance and Administration Part (OMAP); Part 1: Protocol specification.
综合业务数字网(ISDN)； 7号信令；操作、维护和管理部分(OMAP)，第1部分：协议规范。
2
Integrated Services Digital Network (ISDN); Signalling Systim No. 7; Signalling connection Control Part (SCCP) [connectionless and connection-oriented] to support international interconnection.