Vodavi STARPLUS Triad XTS, Installation Manual

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CO/PBX Connections 3-29
Chapter 3 - System Installation
The T1IB contains 2 switches (SW1 and SW3) and 3 connectors (CN1, CN2 and CN3). The clock
selection switch is used for control synchronous clock. The Line Build-Out switch is controlled
by distance between the
XTS Systems and a CSU and SW1 #4 is used for loopback control.
The clock control cable should be connected by a daisy-chain method when more than one
T1IB board is installed. When the clock control cable of the T1IB is connected by daisy-chain
method, the clock selection switch of the first T1IB must be placed in the Enable position and
the other board should be placed in the Disable position. The Line Build-Out switch must be
selected by distance between the
XTS System and a CSU and the switch selection as indicated
in the following chart. If the CSU is located near the KSU, all LBO switches should be ON.
The SW1 switch #4 of the Line Build-Out switch is used for LoopBack control. Its switch is used
only for hardware test and must be placed in the ON position for normal operation.
Table 3-6: T-1 Board LEDs
LED # Meaning Function
1 IN USE At least one of the 24 circuits is in use.
2 RED T1IB is in Red alarm due to any alarm.
3 H/W TEST Normal call processing is not available.
4 BLUE. T1IB has detected RX_BLUE alarm.
5 YELLOW T1IB has detected RX_YELLOW alarm.
6 OOF T1IB is Out of Frame synchronization.
7 RCL T1IB receives Carrier Loss (unplugged from the cable)
8 CLOCK Clock Enable/Disable
Table 3-7: T-1 Ordering Information
T-1 Ordering Information
Ringer Equivalent Number 6.0P
Facility Line Interface 04DU9-B
Jack Type RJ45
Table 3-8: T-1 Switch Positions
Distance
Switch #
1 2 3 4
0 to 133 feet on on on on
133 to 266 feet off on on on
266 to 399 feet on off on on
399 to 533 feet off off on on
533 to 655 feet on on off on