General gate for supporting various terminal and communication method between gate and terminal

Abstract

This invention relates to a various terminals supported universal VoIP gateway and communication method between gateway and terminal. Said gateway includes share memory, network processor, external interface and digital signal processor, wherein the share memory for temporary storing speech data by which network processor and digital signal processor exchanging data, network processor for network accessing and routing and having plurality of interfaces by which realizing data communication between gateway and external part, digital signal processor converting speech coding / decoding mode. Said invention has advantages of supporting all current speech coding / decoding modes, simplifying terminal design and reducing terminal cost.

Description

technical field [0001] The invention relates to a gateway, in particular to a universal VoIP gateway supporting multiple terminals and a communication method between the gateway and the terminal. Background technique [0002] Voice codec is an important foundation of IP voice communication. The current main codec methods are: G.711, G.721, G.728, G.723.1, G.729, G.726, CDMA QCELP, long-term prediction rules Pulse excitation coding (RPE-LTP), enhanced full rate (EFR), adaptive multi-rate (AMR) and other speech codec methods. They have different coding efficiencies, and are customarily used for voice codecs of different devices, such as G.711, G.728, G.723, G.726, G.729 are often used for voice codecs of Internet telephony, CDMA QCELP It is used in IS-95-based CDMA system, EFR is used in GSM specification 06.60, AMR is defined in GSM06.90 system, and it is also the voice codec method of many third-generation wireless communication systems. [0003] Various communication devi...

AI Technical Summary

Problems solved by technology

This has a great impact on the network access of terminals and the interoperability between devices, which is particularly important in today's situation where various communication devices are integrated and interpenetrated; for example, mobile phones can only be accessed through GSM, GPRS, CDMA or other 3G mobile communication networks receive voice services, and support CDMA QCELP, GSM EFR, GSM AMR voice codec methods; current IP networks mainly provide voice services for fixed terminals, such as VoIP phones or broadband in the usual sense Telephones, or provide voice services for a small number of mobile terminals through the AP (Access Point) of the wireless local area network, such as WLAN mobile phones or Bluetooth mobile phones to provide IP voice services, but they only support G.711, G.721, G.728, G. 723.1, G.726, and G.729 voice codec methods cannot provide voice services for mobile terminals in mobile communication networks; many companies have begun to integrate voice services of mobile communication networks and ordinary wireless networks on mobile terminals, making new The mobile terminal can work not only in the mobile communication network, but also in the wireless local area network

[0004] However, the voice codec methods supported by existing gateways are limited, and some specific voice codec methods cannot be supported by existing gateways, such as: CDMA QCELP, GSM EFR, GSM AMR, etc.

And this will affect the use range of mobile terminals that realize dual access to mobile communication networks and wireless local area networks, so it is hoped that a new type of gateway that can be used in conjunction with new type mobile terminals can be provided

[0005] In addition, due to the limitations of the existing gateway functions, the codec method of the existing VoIP system is end-to-end, that is, the two terminals of the call must support the same voice codec method, which limits the VoIP of other voice codec terminals. implementation, which is not conducive to the realization of interconnection between various terminals

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