Install The Stratum 3 Clock Wiring - Avaya MCC1 Installation And Upgrades

Installing the Stratum 3 Clock
Task List: Install the Stratum 3 clock

Install the Stratum 3 Clock Wiring

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1
Connect the B25A cables from the TN780 connector panel slot on the system cabinet and the
Stratum 3 Clock to the cross-connect module in the yellow field.
2
Connect the CSU plug end of the H-600-274 (Y) cable to the primary CSU. Route an H600-307
cable from the DS1 connector panel slot on the system cabinet to the connector on the
"SYSTEM" end of the "Y" cable.
3
Route a B25A cable from the "CLOCK" end of the "Y" cable to the cross-connect module in the
yellow field.
4
Repeat steps 2 and 3 for the secondary CSU. The maximum allowable cabling distance between
the Stratum 3 clock and the CSU is shown in
5
For standard reliability systems, refer to
cross-connect the TN780 and "CLOCK" end connections to the Stratum 3 Clock connections on
the cross-connect module.
6
For high or critical reliability systems, refer to
page 699 to cross-connect the TN780 and "CLOCK" end connections to the Stratum 3 Clock
connections on the cross-connect module.
7
The common cross-connection from the TN780 in A and B carriers to the Stratum 3 Clock should
be done by bridging the jumper wires.
8
Dress the cables down sides of the cabinet and run through the Cable Slack Manager, if provided.
9
Administer using the Administrator's Guide for Avaya Communication Manager (555-233-506).
Maximum Cabling Distance
Channel Service
Unit (CSU)
551A
551V
551V EFS/R
EFS T1
Cross-Connects for Standard Reliability
From: Stratum 3 Clock
Lead
Designation
RREF1
TREF1
RREF2
698
Maximum Cabling
Distance
85 Feet (26 m)
85 Feet (26 m)
655 Feet (199.6 m)
655 Feet (199.6 m)
Connecting
Lead Block
Color Terminal
W-BL 1
BL-W 2
W-O 3
Maximum Cabling Distance
Cross-Connects for Standard Reliability
Cross-Connects for High or Critical Reliability
To: Y Cable Clock End (Primary)
Lead Lead
Designation Color
V-O
O-V
To: Y Cable Clock End (Secondary)
V-O
SI Installation and Upgrades
on page 698.
on page 698 to
on
Connecting
Block
Terminal
43
44
43
June 2004