| 摘要 |
<p>A method of providing a control channel between first CT (6) and second RT (8 and 10) access terminals in a digital loop carrier, includes forming a pool of channels coupling the first CT (6) and second RT (8 and 10) terminals wherein each member of the pool can be assigned either to serve as the control channel or as a data channel. The first CT (6) terminal broadcasts a first signal pattern to the second RT (8 and 10) terminal of the pool. Second terminal RT (8 and 10) polls variable available channels for the first signal pattern. After recognizing the first signal pattern, second terminal RT (8 and 10) sends a second signal pattern to the first terminal CT (6). After recognizing the second signal pattern by the first terminal CT (6), a third signal pattern is transmitted to the second terminal RT (8 and 10). The second terminal RT (8 and 10) recognizes the third signal pattern and designates the channel as the control channel.</p> |
