Aria-130 Digital Key Telephone System
Issue: 1.2
Installation Manual
130
3.5.8.3 Miniature 8-position jack for ISDN connection
The contact assignments of miniature 8-position jack used for ISDN connection.
a. Basic Rate User network Interface
b. Primary Rate User network Interface (E1/T1)
Fig 3.5.24.a RJ-45 Connector
1 2 3 4 5 6 7 8
ISO 8877
ITU-T Rec. I.430
Contact
1
2
3
4
5
6
7
8
TE
Power Source 3
Power Source 3
Transmit
Receive
Receive
Transmit
Power Source 2
Power Source 2
NT
Power Source 3
Power Source 3
Receive
Transmit
Transmit
Receive
Power Source 2
Power Source 2
Polarity
+
-
+
+
-
-
-
+
Table 3.5.8.a Contact assignments
Fig 3.5.24.b RJ-45 Connector
1 2 3 4 5 6 7 8
ISO 10173
ANSI T1.408
Contact
1
2
3
4
5
6
7
8
TE
Receive
Receive
Shield(R) *
Transmit
Transmit
Shield(T) *
Power Source *
Power Source *
NT
Transmit
Transmit
Shield(T) *
Receive
Receive
Shield(R) *
Power Source *
Power Source *
Polarity
-
+
Table 3.5.8.b Contact assignments
* Optional