Ordering Your Isdn Pri Or T1 Line In North America - Eicon Networks Diva Server Series Installation Manual

Ordering Your ISDN PRI or T1 Line
in North America
This chapter will assist you in ordering an ISDN PRI or a T1 line for your Diva
Server PRI adapter. It provides recommended settings for a number of the
configuration settings on Diva Server PRI adapters. You should specify these
settings when you order your line from your service provider.
Line types
The Diva Server PRI adapters can be configured to support an ISDN PRI line or a
T1 line.
ISDN PRI
In North America and Japan, an ISDN PRI line typically supports 23 B-channels
and one D-channel. PRI configurations are used to receive multiple, simultaneous
ISDN calls from analog-modem and digital-services dial-in traffic. Another
common use of ISDN PRI is to connect a PBX (Private Branch Exchange) to a
central office switch.
Channelized T1 (robbed-bit signaling)
Robbed-bit signaling, which uses bits from specified frames in the user data
channel for signaling, fits into the in-band signaling category. In this scenario, bits
are 'robbed' from each channel for signaling purposes, as opposed to ISDN PRI
(out-of-band signaling) which dedicates a specific channel (D-channel) to
signaling.
Connecting to a PBX
In some installations, the PRI or T1 line is connected to a PBX instead of the Diva
Server PRI adapter. In these cases, you must correctly configure the PBX to
communicate with the Diva Server PRI adapter.
18

Ordering Your ISDN PRI or T1 Line in North America

VoIPon www.voipon.co.uk sales@voipon.co.uk Tel: +44 (0)1245 808195 Fax: +44 (0)1245 600030