180
Installing the Avaya™ S8700 Media Server with Avaya™ MCC1 or SCC1 Media Gateway
Installing the Stratum 3 clock (if used)
May 2003
NOTE:
Only SW1 and SW2 are used. SW1 controls the output of alarm signals from the Stratum
3 Clock circuit pack.
Cable the Stratum 3 Clock
‘‘Typical Connections to Stratum 3 Clock’’ on page 181
shows typical connections to a Stratum
3 Clock cabinet. Connections are made through the yellow field cross-connect. A custom “Y”
cable (H600-274) connects the CSU to the DS1 circuit pack and taps off the input for the
Stratum 3 Clock. A resistor built into the cable to provide the necessary isolation between the
media gateway and the clock. The “Y” cable plugs directly into the CSU and connects to
standard cables for interface to the media gateway and the yellow field on the MDF.
The H600-307 cable connects the media gateway end of the “Y” cable to a DS1 circuit pack
(shown as TN464/2464, TN722, or TN767). The B25A cable connects the clock end of the “Y”
cable to the yellow field on the MDF.
Composite Clock Timing Output (TOCA) Circuit Pack
Switch Range
500 1000
1 ft.
(0.3 m)
500 ft.
(152 m)
1000 ft.
(305 m)
1500 ft.
(457 m)
2000 ft.
(610 m)
2500 ft.
(762 m)
3000 ft.
(914 m)
OFF OFF <-----------------------------------------------
--->
ON OFF <------------------------------------------------
---->
OFF ON <-------------------------------------------------
--->
ON ON <-------------------------------------------------
-->
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