iPECS eMG800
Hardware Description and Installation Manual
Issue 1.8
35
4.3.1.1
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 eMG800 Feature &
Operation 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 4.3.1 1. Use care to align pins of the connector with the CN1 and CN2
connectors on the CMU and press firmly in place.
4.3.1.2
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 1st slot of the BKSU is for the MPB only.
1)
Assure Power is OFF.
2)
Slide the LCOB in the guide rails of the desired slot.
3)
Tighten thumbscrews to hold the board firmly in place.
4.3.1.3
LCOB Wiring
The CO Line Tip and Ring terminations are located on the center pair of each RJ45 connector. A separate
RJ45 is provided for each analog CO Line supported by the LCOB (4, 8, or 12).
Refer to the pin-out chart below,
Wire the CO Tip and Ring pins to PSTN CO Line termination point using UTP cable.
Tag or number wiring for maintenance.
Table 4.3.1.3-1 LCOB Ports
CONNECTOR
PIN
SIGNAL NAME
RJ45
1,2,3
Not used
4,5
CO-T, CO-R
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 1st LCOB port RJ45 to the appropriate SLIB port. For SLIB wiring, refer to
section 4.4.1 and 4.4.2.
Tag or number wiring for maintenance.
Table 4.3.1.3-2 PFT Port 1st Port
CONNECTOR
PIN
SIGNAL NAME
RJ45
1,2
PFT-T, PFT-R
3
Not used
4,5
CO-T, CO-R
6,7,8
Not used
