DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures

9-1537STRAT-3 (Stratum 3 Clock)

9

switch by using a Y conne ctor (H-600-274 G1 for the 50 pin DS1 end or

H-600-274 G2 for the 15 pin DS1 end).

For more information on the installation of the Stratum 3 clock, see the

DEFINITY Enterprise Communications Server Release 5.4 Installation and Test for Multi-Carrier Cabinets
.

Figure 9-90. Stratum 3 Clock Hardware Configuration

Tone-
Clock
TN780
Tone-
Clock
TN780
TOC
DS1
Ref A
PAI
Alarms
PPN
DS1
Ref B
TOC
ST3 ST3
CI CI
A B
A
A
B
B
DS1
TN464
TN767
or
TN722
DS1
TN464
TN767
or
TN722
Timing output Timing output
-48V -48V