Nortel Networks 9150 - Manual (Page 112)

82 Remote Gateway 9150 Installation and Administration Guide
Planning for Remote Gateway 9150 unit installation Standard 3.1
Stations used for locally controlled calls can be further configured with features
and their key locations.
ISDN BRI information
To ensure that you get the correct ISDN service for the Remote Gateway 9150
unit, tell your service provider how you want the ISDN line to be provisioned.
Request the following:
!
two B-channels providing voice and data capability
Both B-channels must be Circuit Switched Voice and Data.
!
Calling Line Identification (CLI) or Caller ID
CLI provides the caller’s telephone number when you receive a call. This
information is provided by the network and not the caller, so it can be used
as a security measure to identify calls to be accepted and rejected.
!
64 Kbps clear channel
Note: A 64 Kbps clear channel is also required on the ISDN PRI
connection between the host PBX and the PSTN. A 56 Kbps channel does
not provide enough bandwidth to process one call using G.711
compression.
In return for providing the ordering information, your service provider gives you
directory numbers and, if used in your area, Service Profile Identifiers (SPIDs).
SPIDs are not provided for the AT&T 5ESS Custom service.
A directory number is the address or ISDN telephone number for the ISDN line
assigned by the service provider. Each ISDN line receives at least one telephone
number, called the Primary Directory Number.
If used in your area, your service provider provides you with the SPIDs. These
are associated with the service you have ordered, and you must use these as part
of the configuration for the Remote Gateway 9150 unit before any ISDN
connections can be made (except for AT&T Custom). The SPID is similar to the
ISDN telephone number and its format is unimportant as long as the information
is entered correctly when configuring the Remote Gateway 9150 unit.