Interface Board (T1Ib) - Vodavi Starplus Triad 1/2/3 Installation Manual

CO/PBX Connections
T-1 Interface Board (T1IB)
The T1IB provides the T-1 (1.544Mbps, 24-Voice Channel) digital interface
circuit, control circuitry, and synchronous clock control circuits. DTMF
tone detection units can be installed optionally on the T1IB. The T1IB has
8 LEDs on the front edge of the PCB which indicates errors of T-1 line,
in-use status, and synchronous clock enable status.
LED #
1
2
3
4
5
6
7
8
The T1IB contains 2 switches (SW1 and SW3) and 3 connectors (CON1,
CON2 and CON3). The clock selection switch is used for control
synchronous clock. The Line Build-Out switch is controlled by distance
between the
loopback control.
The PLLU must be installed on the MPB for the T-1 card to operate
properly.
Software 2.1G or newer is needed when using any T-1 card that contains
1.0G Firmware. Withoutthe newer software, the T-1 card will not work.
Table 2-5: T-1 Board LEDS
IN USE. At least one of the 24 circuits is in use.
RED. T1IB is in REd alarm due to any alarm.
H/W TEST. Normal call processing is not available.
BLUE. T1IB has detected RX_BLUE alarm.
YELLOW: T1IB has detected RX_YELLOW alarm.
OOF. T1IB is Out of Frame synchronization.
RCL. T1IB receives Carrier Loss (unplugged from the
cable)
CLOCK. Clock Enable/Disable
Triad 1/2 Systems and a CSU and SW1 #4 is used for
Function
2-39