ISDN BRI NT (Net)
50
SmartNode 4660 & 4670 User Manual
D • Port pin-outs
ISDN BRI NT (Net)
The BRI phone port uses an 8-pin RJ-45 connector (the pinout is shown in
table 11
).
Note
Pins not listed are not used.
ISDN BRI TE (User)
The BRI
TE
port uses an 8-pin RJ-45 connector (the pinout is shown in
table 11
).
Note
Pins not listed are not used.
Note
All pins between the
NT
and
TE
ports are connected during power failure.
Fallback relay operation:
•
When the unit is not powered, the fallback relay connects pins 3,
4, 5, and 6 of the BRI 0/0 and BRI 0/1 ports together. This
enables you to place calls to the PSTN even if the unit is powered
down.
Table 11. ISDN BRI NT Port: RJ-45 socket
Pin
Signal
3
Rx+
4
Tx+
5
Tx-
6
Rx-
Table 12. ISDN BRI TE Port: RJ-45 socket
Pin
Signal
3
Tx+
4
Rx+
5
Rx-
6
Tx-