发明名称 |
DIRECT DIGITAL ACCESS TELECOMMUNICATION SYSTEM |
摘要 |
In a telecommunication system, a circuit is provided for determining the system mode and for restoring converted signalling bits. The circuit is designed to be used in a telecommunication system that lacks frame alignment. The circuit may serve as an trunk line interface located in a Direct Digital Access Office Channel Unit. Alternatively, the circuit may be coupled to a single trunk line which links Customer Premises Equipment (CPE) to the telecommunication system. The detection portion of the circuit determines the system mode of the trunk line connected to a CPE by detecting signalling bits when frame alignment is not maintained. The restoration portion of the circuit restores signalling bits which were converted due to a lack of frame alignment to their pre-converted state. |
申请公布号 |
WO9209152(A3) |
申请公布日期 |
1992.07.23 |
申请号 |
WO1991US08271 |
申请日期 |
1991.11.07 |
申请人 |
INTEGRATED NETWORK CORPORATION |
发明人 |
SHARPER, CRAIG, A.;REAMER, LYNNE, A. |
分类号 |
H04J3/12;H04L12/42;H04Q11/04 |
主分类号 |
H04J3/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|