Cisco VG320 User Manual

PolarityNT
3
TE
2
8-Pin
1
1
Pins 1, 2, 7, and 8 are not used.
2
TE refers to terminal-terminating layer 1 aspects of TE1, TA, and NT functional groups (this applies to
ISDN BRI S/T WIC).
3
NT refers to network-terminating layer 1 aspects of NT1 and NT2 functional groups.
The following table lists the connector signals and pinouts for ISDN BRI U Port Signals and Pinouts (RJ-45).
Table 23: ISDN BRI U Port Signals and Pinouts (RJ-45)
Function8-Pin
1
No connection3
Signal—Tip or Ring
4
Signal—Tip or Ring
5
1
Pins 1, 2, 7, and 8 are not used.
E&M Pinouts
The following table lists the connector signals and pinouts for an E&M port
Table 24: E&M Pinouts
Four-Wire Operation, TypeTwo-Wire Operation, TypeDescriptionSignalPin
43214321
—
SBSB
———
SB
—
-48V
signaling
battery
SM1
MMMMMMMMSignaling
input
M-lead2
RRRR
————
Ring,
audio
input
R3
R1R1R1R1RRRRRing,
audio
input/output
or
output
R or
R1
4
Cisco VG310 and Cisco VG320 Voice Gateways Hardware Installation Guide
76 OL-31292-01
Cable Specifications and Information
E&M Pinouts

Cisco VG320 Specifications

General

Brand	Cisco
Model	VG320
Category	Gateway
Language	English