发明名称 |
Device for adapting narrowband voice traffic of a local access network to allow transmission over a broadband asynchronous transfer mode network |
摘要 |
A voice adaptation device (18) provides an interface between a narrowband local access network and a broadband asynchronous transfer mode (ATM) backbone network (16). The voice adaptation device (18) includes a T1/E1 network adaptor (50) that converts T1/E1 signals carrying narrowband voice traffic into an ATM cell format. The T1/E1 network adaptor (50) also performs echo cancelling, voice enhancement, digital voice protocol conversion, and compression/decompression on the narrowband voice traffic. The voice adaptation device (18) also includes a synchronous optical network formatter (52) that places ATM cells generated by the T1/E1 network adaptor (50) into synchronous optical network signals. The synchronous optical network signals are transmitted across the broadband ATM backbone network (16). |
申请公布号 |
AU5317396(A) |
申请公布日期 |
1996.10.08 |
申请号 |
AU19960053173 |
申请日期 |
1996.03.20 |
申请人 |
DSC COMMUNICATIONS CORPORATION |
发明人 |
FREDERICK H SKOOG |
分类号 |
H04M3/00;H04L12/56;H04L12/64;H04M7/00;H04Q3/00;H04Q11/04 |
主分类号 |
H04M3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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