Lucent Technologies 7820-0802-003 manual Configuring channel usage

Configuring T1 Cards

Configuring channel usage

To specify CSU settings, proceed as in the following example after reading in the line’s T1 profile:

admin> set front-end-type = csu admin> set csu-build-out = 7.5-db

admin> write

Configuring channel usage

You must specify how each of the 24 channels of a T1 line is to be used. By default, T1 channels are configured as switched. (If you are going to set up the lines for NFAS, see “Configuring NFAS” on page 7-13for additional channel-configuration information.)

You can configure each of the 24 channels of a T1 line for one of the following uses:

•unused-channel—Channel is unused. Send the single idle code defined for this channel.

•switched-channel—A switched channel, which will be robbed-bit or D channel, depending on how the line is configured at a higher level.

•nailed-64-channel—Clear-channel 64Kbps circuit. Does not require any setup information.

•d-channel—Channel is used for ISDN D channel signaling directed at the appropriate controller for the physical interface.

•nfas-primary-d-channel—The primary D channel for a group of T1 lines with the same NFAS ID. All other channels on the NFAS line must be set to switched-channel, nailed-64-channel, or unused-channel. Within an NFAS group, only one line should be configured to provide the primary ISDN D channel.

•nfas-secondary-d-channel—The secondary D channel for a group of T1 lines with the same NFAS ID. All other channels on the NFAS line must be set to switched-channel, nailed-64-channel, or unused-channel. Within an NFAS group, you configure only one line to provide the secondary (backup) D channel.

To specify the channel usage:

1List the Line-Interface parameters: admin> list line-interface

2Set the Channel-Usage parameter for the first channel:

admin> set channel 1 channel-usage=[unused-channel switched-channel nailed-64-channeld-channelnfas-pri- mary-d-channelnfas-secondary-d-channel]

admin> write

7-18 APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide