Interphase Tech ispan 5535 pri Manual Do Utilizador

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.

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.

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)