Table 8-27 Pin Definitions Of The Interface On The E&M; Table 8-28 Types Of E&M Signaling - Raisecom RC3000-15 Hardware Description

Raisecom
RC3000-15 (P100R001) Hardware Description
Table 8-27 PIN definitions of the interface on the E&M
1
2
3
4
5
6
7
8
The E&M signaling is used to indicate the on-hook or off-hook status of the telephone. It
transmits the corresponding status through the wiring mode of the E wire and M wire. Table
8-28 lists types of E&M signaling
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

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Table 8-28 Types of E&M signaling
I
II
III
IV
V
The RC3000-15, as a Tie line device, uses the following E&M signalling type shown in
Figure 8-4.
PIN Cable
SB
E
R1
R
T
T1
M
SG
The 10E&M supports configuring the type of E&M signaling of the voice interface
through the jumper on the card.
Each voice interface can be configured to support one of the I, II, III, IV, or V signaling.
By default, the signaling type of the voice interface is V.
The signaling types of the PBX and E&M must be the same.
Signaling type
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Signal battery, used for II, III, and IV signaling
E signaling cable
 Idle in 2-wire mode
 Rx R1 in 4-wire mode
 Rx R in 2-wire mode
 Tx T1 in 4-wire mode
 Tx T in 2-wire mode
 Tx T in 4-wire mode
 Idle in 2-wire mode
 Rx R in 4-wire mode
M signaling cable
Signal ground, used for II, III, and IV signaling
Usually used in North American areas
Seldom used
Usually used in the traditional telephone center
Seldom used
Usually used in areas except North American
Definition
Description
8 Voice cards
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