Unitary PCM rate converter and multiframe buffer
US4805171A · kind A · utility
15Cited by
5References
49Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1987 |
| Grant date | Feb 14, 1989 |
| Priority date | — |
| Expiry date | Jul 10, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/1635
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A PCM rate conversion module is provided for interfacing a thirty-two channel PBX with a twenty-four channel link. The PCM conversion circuitry includes an inbound data memory station and an outbound data memory station wherein inbound T1 data is looped back out to the T1 data link and outbound PBX data is looped back out to the PBX. The looping provides effective and reliable testing of the rate conversion apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.