
Cisco 1003 and Cisco 1004 User Guide 45
Pinouts
BRI Port and Cable Pinouts
1. Pins 1, 2, 7, and 8 are not used.
2. TE refers to terminal terminating layer 1 aspects of TE1,
TA, and NT2 functional groups.
3. NT refers to network terminating layer 1 aspects of NT1
and NT2 functional groups.
1. NT refers to the network terminating layer 1
aspects of NT1 and NT2 functional groups.
2. Pins 1, 2, 3, 6, 7, and 8 are not used.
3. LT refers to the line termination point (i.e., at
the wall jack).
BRI Port (RJ-45) Pinouts for the Cisco 1003
Router
8 Pin
1
TE
2
NT
3
Polarity
3
Transmit
Receive
+
4
Receive
Transmit
+
5
Receive
Transmit
–
6
Transmit
Receive
–
BRI Cable (RJ-45-to-RJ-45)
Pinouts for the Cisco 1004 Router
NT
1
RJ-45
8 Pin
2
Wire
LT
3
RJ-45
8 Pin
4
Tip
4
5
Ring
5