ZyXEL Communications X6004 User Manual page 526

Chapter 40 Product Specifications
ISDN PRI Cable (E1/T1) Pin Assignments
Use RJ-48 cables to connect the ISDN PRI ports to the PBX (Private Branch
Exchange). The following diagram and chart show the pin assignments of the
ISDN PRI cable.
Figure 308 ISDN PRI Cable Pin Assignments
Table 214 ISDN PRI Cable Pin Assignments
RJ-48
PIN
1
2
4
5
3
6
7
8
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RJ-48 PIN SIGNAL
4 RX/Ring/- <-->TX/Ring/-
5 RX/Tip/+ <-->TX/Tip/+
1 TX/Ring/- <-->RX/Ring/-
2 TX/Tip/+ <-->RX/Tip/+
3 Shield/Return/Ground
6 Shield/Return/Ground
7 No connect
8 No connect
X6004 User's Guide