Integrated Services Digital Network (ISDN); Supplementary service interactions; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification
综合业务数字网(ISDN);补充业务交互;数字用户信令系统第一号(DSS1)协议;第2部分:协议实现一致性声明(PICS)形式规范
ISDN user-network interface layer 3 protocol implementation conformance statement (PICS) proforma. This work provides a basis for further work on PIXIT & ATS for supplementary services. To be spec d according to ISO 9646. Covers both user & network.