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 |
<p>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).</p> |
申请公布号 |
MX9706907(A) |
申请公布日期 |
1997.11.29 |
申请号 |
MX19970006907 |
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;(IPC1-7):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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