ZyXEL Communications IP PBX X6004 - Manual (Page 529)

Chapter 39 Product Specifications
X6004 User’s Guide
529
ISDN BRI Cable Pin Assignments
Use RJ-45 cables to connect the ISDN BRI ports to ISDN phones or PBXs. The
following diagram and chart show the pin assignments of the ISDN BRI cable.
Figure 302 ISDN BRI Cable Pin Assignments
Table 209 ISDN BRI Cable Pin Assignments
RJ-45
PIN
RJ-45 PIN SIGNAL
1 8 No connect
2 7 No connect
3 6 Transmit Data + <--> Transmit Data -
4 5 Receive Data + <--> Receive Data -
5 4 Receive Data - <--> Receive Data +
6 3 Transmit Data - <--> Transmit Data +
7 2 No connect
8 1 No connect