Vodavi STARPLUS Triad XTS, Installation Manual

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3-22 CO/PBX Connections
Chapter 3 - System Installation
CO/PBX Connections
There are four types of analog CO/PBX Line interface boards available. These boards include
the Loop Start CO Line Interface Boards (LCOB, LCOBE, and LCOBC) and the Direct Inward Dial
Interface Board (DIDB).
There are four types of digital CO/PBX Line interface boards available. These boards include
the T1IB, PRIB, BRIB, and VOIP card.
When using CO Lines as additional music inputs, keep in mind that the music source may
require a talk battery in series with either TIP or Ring. This talk battery boosts the signal level
sufficiently so that the CO Line interface can read the signal.
Figure 3-14: Talk Battery
Analog CO/PBX Line Interface Boards
Loop Start CO Interface Board
The Loop Start CO Interface Board (LCOB) supports up to eight (8) Loop Start CO Lines
(LCOB = 6 lines, LCOBE = 8 lines, LCOBC = 8 lines and Caller ID) and can be optionally
equipped with a DTMF Receiver Unit.
Each Interface contains ring and loop current detection circuits, Analog-to-Digital and
Digital-to-Analog conversions, and pulse and ground flash signaling circuit. The LCOB
contains LEDs that illuminate to indicate the in-use status of each CO line. The RJ21 type male
connector is mounted on the front edge of the LCOB for connecting to the CO lines.
»
Add-on Boards: DTRU for LCOB, DTRU4 for LCOBE and LCOBC
Installing the DTRU Module
DTRU to LCOB
1. Unpack the DTRU module from its antistatic conductive bag.
2. Locate the CN1 and CN2 connectors on the DTRU module.
3. Locate the CN1 and CN2 and the CN3 and CN4 connectors on the LCOB. Either pair can be
used to mount a DTRU. Use the second pair to mount a second DTRU.
4. Position the DTRU module so that either its:
CN1 aligns with CN2 and its CN2 aligns with the CN1 connector on the LCOB.
-or-
CN1 aligns with CN4 and its CN2 aligns with the CN3 connector on the LCOB.
5. Push the DTRU onto these connectors to seat it securely.
KSU
Music Source
Talk
Battery
+
-