IPECS Release 5
Hardware Description & Installation
Issue 5.0
77
4.5.5 LGCM8
Installation
The LGCM8 may be installed anywhere except for slot 10 of the cabinet, or may be installed
anywhere in the Desk Mount Holder. The LGCM8 provides a gateway between standard PSTN
Loop Start Lines and other iPECS appliances. The LGCM8 can support eight (8) PSTN Lines.
LEDs
In addition to the Power and LAN LEDs, the LGCM8 has eight (8) green status LEDs and two (2)
red LEDs. The eight (8) LEDs indicate that the individual PSTN Lines are busy (LED On), idle (LED
Off) or ringing (LED flashing). One (1) red LED on left side indicates whether the CMU4 option
module for the 1
st
~4
th
port is installed. If installed, the LED is On. One (1) red LED on right side
indicates whether the CMU4 option module for the 5
th
~8
th
port is installed. If installed, the LED is
On.
CMU (Call Metering Unit)
The LGCM4 supports the call metering function with installation of an optional CMU4 module.
Three types of module, based on protocol, are available CMU4-12PR, CMU4-16 and CMU4-50PR;
see section 2.1.3.2. Before installing the CMU4 module, make sure that power is turned off.
Figure 4.5.5-1 shows the procedure for installing a CMU4 module on the LGCM8. Check the
connector numbers of the CMU4 module prior to installation. Note that the connector numbers for
the CMU4-12PR and 16 are the same while for the CMU4-50PR, the connector numbers are
reversed.
CMU4-12PR & CMU4-16
Port No
LGCM4
CMU4-12PR & 16
CN6 CN1
1st ~ 4th port
CN7 CN2
CN8 CN1
5th ~ 8th port
CN9 CN2