AT&T MERLIN LEGEND Release 3.1 System Programming Manual page 430

Lines and Trunks
Console Display/Instructions
12 Save your entry.
Select .
13 Specify whether the clock is to be synchronized to an external endpoint (loop) or
is to be free running (local), then go to Step 15.
_
_
14 Select the 800 NI-BRI module port to be the secondary clock source.
15 Save your entry.
Select .
16 Select Tertiary.
_
17 Enter the slot number of the module to contain the tertiary system clock.
4–58
Programming Procedures
Additional Information
If the slot selected in Step 11 contains a
100D module, continue with Step 13.
If the slot selected in Step 11 contains an
800 NI-BRI, go to Step 14.
NN
xx = slot number entered in Step x
Select or
.
Dial or type [x].
Dial or type [xx]
PC