This Recommendation defines the generic procedures applicable for the control of supplementary services at the user-networkinterface.
本建议定义了在用户网络接口上用于控制补充业务的通用程序。
2
Because SS7 has more intelligent capabilities than User-NetworkInterface protocols such as ISDN Primary Rate Interface, SS7 can help ease congestion across the Internet.
This Recommendation is concerned with the layer 1 electrical, format and channel usage characteristics of the primary rate user-networkinterface at the S and T reference points.