Chapter 3: Connecting to the Line
European E1/PRI Line
When you connect the adapter to a European E1/PRI line, first determine the appropriate connection method, cabling requirements, and link requirements.
This section describes the method and requirements for connecting the adapter to a European E1/PRI line.
Connection Method
Generally, your E1/PRI carrier provides a Network Termination 1 (NT1) device to interface between the WAN adapter and the metallic interface of the WAN. You need to connect the WAN adapter to the NT1.
E1/PRI Cabling Requirements
WARNING
Before connecting the cable, read Telephone Lines Unsafe Voltages in the Safety Precautions section at the front of this manual.
The cable between the adapter and the NT1 must meet the following standard E1 attenuation and transmission requirements:
•120 Ohm
•two twisted pairs, category 3 or better
•maximum length: 200 m (655 feet)
iSPAN PRI PCI ISDN Users Guide | 23 |