This Recommendation specifies the DSS 1 signalling requirement on the N-ISDN user-network interface for the Explicit Call Transfer (ECT) supplementary service.
本建议规定了在N - ISDN用户-网络接口上用于明确呼叫转移(ECT)补充业务的DSS1信令要求。
This Recommendation specifies the DSS 1 signalling requirement on the N-ISDN user-network interface for the Explicit Call Transfer (ECT) supplementary service.
本建议规定了在N - ISDN用户-网络接口上用于明确呼叫转移(ECT)补充业务的DSS1信令要求。
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