iPECS eMG800
Hardware Description and Installation Manual
Issue 1.8
34
4.3
CO Line Boards
4.3.1
LCOB (Loop Start CO Line Interface Board)
LCOB (Loop Start CO Interface Board) is employed to interface standard analog PSTN CO lines to iPECS
eMG800 system. LCOB is available in three models, the LCOB4 with 4 analog CO ports, LCOB8 with 8 ports,
and the LCOB12 with 12 ports. LCOB supports Caller Identification (CID) detection, Polarity Reversal (PR)
detection and Call Progress Tone (CPT) detection. An optional CMU4 board, which supports four (4) LCOB
ports each, is required to support call-metering service (50Hz, 12 kHz, and 16 kHz). In addition, the first port of
LCOB has a Power Failure Transfer (PFT) circuit that can be wired to an SLIB port for PFT service.
The below figure shows LCOB8, which other than the added interface circuits is identical to LCOB 4 and 12.
Figure 4.3.1-1 LCOB8
Table 4.3.1-1 Connector Functions
CONNECTOR
FUNCTION
CN1 and CN2
CMU4 connection for 1
st
~ 4
th
ports
CN3 and CN4
CMU4 connection for 5
th
~ 8
th
ports
CN5 and CN6
CMU4 connection for 9
th
~ 12
th
ports
Table 4.3.1-2 LED Indications
LED
DESCRIPTION
LED
DESCRIPTION
LD1
1
st
port - ON, In use ; OFF, Idle
LD7
7
th
port - ON, In use ; OFF, Idle
LD2
2
nd
port - ON, In use ; OFF, Idle
LD8
8
th
port - ON, In use ; OFF, Idle
LD3
3
rd
port - ON, In use ; OFF, Idle
LD9
9
th
port - ON, In use ; OFF, Idle
LD4
4
th
port - ON, In use ; OFF, Idle
LD10
10
th
port - ON, In use ; OFF, Idle
LD5
5
th
port - ON, In use ; OFF, Idle
LD11
11
th
port - ON, In use ; OFF, Idle
LD6
6
th
port - ON, In use ; OFF, Idle
LD12
12
th
port - ON, In use ; OFF, Idle
