User's Manual

16-2 Preliminary May 9, 2000 APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide

Configuring STM-0 Cards

Using STM and T1 profiles

When the TAOS unit first detects the presence of an STM-0 card, it creates a default STM

profile for the card as well as 28 T1 profiles for each component T1 line.

The following example shows the parameters in a STM profile, with the example settings:

admin> read stm { 1 7 1}

STM/{ shelf-1 slot-7 1 } read

name = ""

physical-address* = { shelf-1 slot-7 0 }

loop-timing = yes

For information about T1 line profiles, see Chapter 7, “Configuring T1 Cards.”

Sample STM-0 configurations

To configure the STM-0 card, you must configure each component T1 profile. In most cases,

you do not need to modify the default configuration of the STM-0 card.

Example of configuring an STM profile

Note: Use of the internal clock is generally not recommended.

To configure the lines of a STM-0 card to use its own internal clock for the timing of the line:

admin> read stm {1 1 1}

STM/{ shelf-1 slot-1 1 } read

admin>

set loop-timing = no

admin> write

STM/{ shelf-1 slot-1 1 } written

After configuring the STM-0 line, configure the individual T1 lines that constitute the STM-0

line as explained in the next section.

Parameter Specifies

Name A profile name of up to 16 characters. The name is displayed after

the line’s physical address in the Dir command output.

Physical-Address Location of the card in the system.

Loop-Timing

Clock source for the line. By default, an STM-0 line uses

loop-timing, which means the line derives its timing from the input

clock. When loop-timing is set to No, the line derives its timing

from the TAOS unit’s internal clock. Lucent recommends that you

use the default Loop-Timing setting.