Product Description
Memotec Inc. 4-43
Four RJ-45 to RJ-45 cables are provided for each E&M interface card.
The following table describes the RJ-45 pinout for an E&M port.
NOTE: The pinout functions on an E&M/PTT port are slightly different from that of a
standard E&M port.
Pin No. Usage Description
1 SB Signal Battery. Return for M Signal
2 M Control Signal from PBX
3 R1 Voice from PBX (Transmit Ring)
4 R Voice to PBX (Receive Ring) two-wire connection
5 T Voice to PBX (Receive Tip) two-wire connection
6 T1 Voice from PBX (Transmit Tip)
7 E Control Signal to PBX
8 SG Signal Ground
Table 4-11 RJ-45 Pinout for E&M Interface Card
Figure 4-31: RJ-45 Pinout (Female Jack) for the E&M Interface Card
CONNECTOR CABLE
SB
M
R1
R
T
T1
E
SG
1
8
8
1
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