iPECS-MG Hardware Description and Installation Manual
Issue 1.1
DECT INSTALLATION
August, 2010
34
5.3.1.1 CMU (Call Metering Unit) Installation
An optional CMU4 board, which supports four (4) LCOB ports each, is required to support call-
metering service (50Hz, 12 kHz, and 16 kHz). For additional information on CMU, see the iPECS-MG
Feature Manual.
Install a CMU4 on connector pairs CN1 and 2, CN3 and 4, and CN5 and 6 on the LCOB to support
CO Line ports 1 and 12, as shown in Figure 5.3.1-1. Use care to align pins of the connector with the
CN1 and CN2 connectors on the CMU and press firmly in place.
5.3.1.2 LCOB Installation
Before installation of the LCOB, make sure CMU4s are installed, if required. The LCOB board can be
installed in any universal slot of any KSU; the 1
st
slot of the BKSU is for the MPB only.
Assure Power is OFF
Slide the LCOB in the guide rails of the desired slot.
Tighten thumbscrews to hold the board firmly in place.
5.3.1.3 LCOB Wiring
The CO Line Tip and Ring terminations are located on the center pair of each RJ-45 connector. A
separate RJ-45 is provided for each analog CO Line supported by the LCOB (4, 8, or 12).
Referring to the pin-out chart below,
wire the CO Tip and Ring pins to the PSTN CO Line termination point using UTP cable
tag or number wiring for maintenance
LCOB Ports
CONNECTOR
PIN
SIGNAL NAME
1,2,3 Not
used
4,5 CO-T,
CO-R
RJ45
6,7,8 Not
used
The first LCOB CO Line port supports PFT (Power Fail Transfer), when power is lost the CO Line is
connected to an SLT port of an SLIB. To support PFT, referring to the pin-out chart below,
wire pins 1 and 2 of the 1
st
LCOB port RJ45 to the appropriate SLIB port. For SLIB wiring, refer to
section 5.4.1 and 5.4.2.
tag or number wiring for maintenance
PFT Port (1
st
Port
CONNECTOR
PIN
SIGNAL NAME
1,2 PFT-T,
PFT-R
3 Not
used
4,5 CO-T,
CO-R
RJ45
6,7,8 Not
used
