Connecting to ISDN PRI (E1/T1) Trunks

The procedure below describes the cabling of the device's E1/T1 (PRI) trunk interfaces.

PRI port cabling must be routed only indoors and must not exit the building.
To protect against electrical shock and fire, use a 26 AWG min wire to connect T1 or E1 ports to the PSTN.
To comply with EMC rules and regulations, use shielded twisted pair (STP) cables for E1 interfaces.

PRI interfaces are a separate orderable item.

Cable specifications:

Cable: STP cable of 26 AWG min.
Connector Type: RJ-48c
Connector Pinouts:

RJ-48c Connector Pinouts for E1/T1

To connect the E1/T1 trunk interface:
1. Connect the E1/T1 trunk cable to the device’s E1/T1 port.
2. Connect the other end of the trunk cable to your PBX/PSTN switch.

Cabling E1/T1 Ports