Integrated Services Digital Network (ISDN); Explicit Call Transfer (ECT) supplementary service; Functional capabilities and information flows
综合业务数字网(ISDN);显式呼叫转移(ECT)补充业务;功能能力和信息流
To reflect changes in service description and in DSS1 protocol: 1) Remove requirement for one call to be placed on hold. TD16 to SPS1 Prague (03/98) refers and gives proposed changes; 2) Reflect changes in Q.82.7. Unnumbered TD to Prague refers. Supporting organizations: SGCS Ltd., GTP Ltd., KPN, BT.