Implementation of an AAL2 processor for voice gateway application 


Vol. 27,  No. 11, pp. 1152-1157, Nov.  2002


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  Abstract

In this paper, a detailed procedure of development for an AAL2 processor widely used in voice gateway application is introduced. The processor supports CPS and SSCS with voice service and framed mode data service. It provides 4 ATM virtual connections, which include 1020 AAL2 channels. The processor has one UTOPIA Level 1 interface for an ATM cell interface and 4 TDM ports for a voice channel interface. The TDM ports carry PCM/ADPCM voice streams. Most AAL2 processors are implemented as software, or hardware and software. so its latency is large. But this processor has very low latency as to CPS and SSCS because all of them are implemented in hardware. Also. it allows not only loopback and switching of CPS packets, but loopback and switching of TDM channels. The key feature is that the internal structure of the CPS and SSCS in this processor seems like as each software function, so they are called whenever they are required. In addition, they are reusable for another design and are scalable for more channels

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  Cite this article

[IEEE Style]

S. Lee and M. Choi, "Implementation of an AAL2 processor for voice gateway application," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 11, pp. 1152-1157, 2002. DOI: .

[ACM Style]

Sang-Kil Lee and Myung-Ryul Choi. 2002. Implementation of an AAL2 processor for voice gateway application. The Journal of Korean Institute of Communications and Information Sciences, 27, 11, (2002), 1152-1157. DOI: .

[KICS Style]

Sang-Kil Lee and Myung-Ryul Choi, "Implementation of an AAL2 processor for voice gateway application," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 11, pp. 1152-1157, 11. 2002.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880