Method and device of transmitting time division multiplex service through IP switch network

Abstract

The invention discloses a method and a device for transmitting time division multiplexing service through an IP exchange network. The method comprises bearing TDM signals by using an IP pack, packaging the TDM signals into an IP net charge in a TDMoIP frame format, and transmitting to a packet switching network; and receiving the TDMoIP frame from the packet switching network, and carrying out corresponding service after extracting the TDM signals from the TDMoIP frame. The device comprises a TDMoIP frame organizing module, a transmitting module, a forwarding table searching module, a MAC / GMAC device, a receiving module, and a TDMoIP frame decomposing module, and may also comprises a TDM small switching module, a multiplexing module and a demultiplexing module. The invention achieves TDM signal package by using the IP pack so as to achieve more convenient and fast network capacity expansion, and the time gap interleaving multiplexing technique can improve the length of net charges of the TDMoIP frame so as to reduce the cost of pack-front catchword, MAC head and IP head of the Ethernet accordingly and improve the utilization rate of the network bandwidth.

Description

technical field [0001] The invention belongs to the technical field of voice and data communication, and particularly relates to a method and a device for transmitting TDM (Time-division multiplexing, time division multiplexing) services through an IP switching network. Background technique [0002] At present, telecommunication technology is developing in the direction of "all IP". Compared with the traditional TDM network, the IP switching network is simple in networking and has an advantage in cost. [0003] In the all-IP process, it involves support for the existing TDM network. There are many ways to support TDM: [0004] Method 1: Maintain two sets of switching networks in the network, one set of circuit domain switching network and one set of packet switching network, if it involves IP services, terminate the TDM signal, convert it into IP packets, and exchange them through the packet switching network. ; If it is a pure TDM service, go directly to the circuit domai...

AI Technical Summary

Problems solved by technology

[0009] The encapsulation method described in this patent application makes a very large adjustment to the frame sequence and time slot sequence of the TDM frame, which is not an efficient method in actual implementation

Another disadvantage is the method of encapsulating TDM signals into MAC (Media Access Control, Media Access Control) frames. Although this method is simple, it is not conducive to network expansion and is very inconvenient in actual network deployment.

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