|
D (5135 words) |
 | Channel that carries provisioning and maintenance data/information between network elements in the SONET overhead. |
| Point on a multipoint channel where a connection to a networked device is made. |
| Allows DSO channels from one T1 or E1 facility to be cross-connected digitally to DS0 channels on another T1 or E1. |
| NMS ISDN for Natural Call Control Developer's Manual (6407-21): NFAS and D Channel Backup (1320 words) |
| The D channel to use as the backup is specified in the configuration file. |
| A similar situation may arise when at the moment of the primary D channel failure both sides are in the Connected state and their states are preserved, but then one side initiates the disconnect process and is cleared before the data link is reestablished. |
| Since a channel cannot serve as a B channel while designated as a backup D channel, an application is not allowed to place a call on a timeslot on a primary or backup D channel. |
Feeds |
Contact