A VoIP Gateway device.Connected to a central digital exchange between intra - and Inter tandem Office of a Digital Voice Signal, and a 64 kbps PCM Link IP Transit line; and a method of intercambThe tandem.

摘要

A Device Access Gateway VoIP (Voice over Internet Protocol Network) which includes a Section insertion patterns Detection Section Identification, pattern IdentificationPassing Through the section of Frame Assembly, and step through the Processing section frames.The identification of Patterns of insertion Section inserts a pattern identification of a Predetermined bit Pattern in a reception signal from a line of Transit Link iP, and sends the signal to a central digital. The Detection Section detects a pattern identification of Patterns of identification from a Central Digital Signal reception.The passage through the Frame Mounting Section converts a package RTP (Real Time Transport Protocol) driving Lines Link IP Voice traffic to a Digit SignalIn a step through Frame format that has a bit rate of 64 kbps when Detection Section detects a pattern identification of Patterns of identification.The passage through the Processing section converts a Digital Voice Signal frames in the passage through the format of frames from the received RTP Packet when a central digitalSection or the detection of Patterns of identification does not detect any Pattern identification. It also describes a method of Central tandem Digital Link.