AT&T MERLIN LEGEND Release 3.0 System Programming Manual page 422

DS1 Facilities
Clock Synchronization
Use this procedure to specify the modules that provide primary, secondary, and
tertiary clock synchronization. (Contact your service provider for more
information about the appropriate setting. ) You can also specify whether the
clock is synchronized to the external endpoint (loop) or to the clock reference
source (local). This procedure is also used to activate or deactivate the clock.
NOTE:
This procedure is necessary only if your system includes more than one
100D module.
Summary: Clock Synchronization
Programmable by
Mode
Idle Condition
Planning Form
Factory Setting
Valid Entries
Inspect
Copy Option
Console Procedure
PC Procedure
Procedure: Clock Synchronization
Console Display/Instructions
1 Select the Lines and Trunks menu.
System Programming:
Make a selection
Extensions
System
SysRenumber Options
Operator Tables
LinesTrunks AuxEquip
NightSrvce
Exit
4–72
Programming Procedures
System manager
All
Not required
Form 3b, Incoming Trunks: DS1 Connectivity
100D module)
Primary clock: the first 100D module in the control unit
carrier; source: loop; activation: active
Primary, Secondary, Tertiary, Loop/Local
No
No
LinesTrunks → LS/GS/DS1 → Dial slot no. → Enter →
ClockSync → Priority → Select clock synchronization →
Enter → Source → Select source of synchronization →
Enter → Activation → Select clock activation → Enter →
Exit → Exit → Exit
[ F4 ] → [ F1 ] → Type slot no. → [ F10 ] → [ F7 ] → [ F1 ] → Select clock
synchronization → [ F10 ] → [ F2 ] → Select source of
synchronization → [ F10 ] → [ F3 ] → Select clock activation →
[ F10 ] → [ F5 ] → [ F5 ] → [ F5 ]
Additional Information
PC
[ F4 ]