Instruction manual

System Features
INTER-TEL
®
5000 ADMINISTRATOR GUIDE – Issue 2.3, September 2007
Page 142 Basic Rate Module (BRM-S)
Basic Rate Module (BRM-S)
Each Basic Rate Module (BRM-S) provides two BRI S/T-interface ports for connecting BRI
trunks to the system. The BRM-S does not support video conferencing or connection of BRI
endpoints to the system.
Each ISDN BRI port provides two trunks/circuits/bearer-channels for a total of four BRI trunks
possible on each BRM-S module in the Inter-Tel 5000 Base Server.
Basic Rate Interface (BRI) capability is supported only in Inter-Tel Europe installations.
Toll Restriction
The following features provide toll restriction on the system and are described in further detail
in this section.
• Trunk Group Toll Restriction: Each trunk group can be designated as “subject to toll
restriction” or “not subject to toll restriction” in DB Programming. If subject to toll
restriction, endpoint class of service is checked when the trunk group is selected for
placing an outgoing call. The exceptions to trunk group toll restriction are as follows:
– Emergency Call Feature: When the Emergency Call feature code is entered, the des-
ignated trunk access code is used to seize a trunk and the programmed emergency
number is dialed regardless of any endpoint or trunk group toll restrictions.
– Automatic Route Selection (ARS): Calls placed using ARS (except Emergency Call
feature calls) are always subject to toll restriction, regardless of the selected trunk
group’s toll restriction programming. Note that only the endpoint COS is checked;
the trunk group COS is not.
– Network ARS Calls: When determining toll restriction for an ARS outgoing call, the
network checks the endpoint toll restriction based on the database information on
the node on which the endpoint resides, not the node that contains the trunk which
the system uses to place the call. The system does not check the trunk COS for ARS
calls.
• Exemption from ARS-Only Restriction: Each trunk group may be designated as
“exempt from automatic route selection (ARS) only.” If exempt, endpoint users with
the ARS-Only class of service can select the trunk group directly.
• Absorbed Digits: Trunk groups that are subject to toll restriction can be programmed to
“absorb” (ignore) the first digit(s) dialed. This allows the system to handle the dialed
digits just as they would be by the local telephone company or PBX to which the sys-
tem is connected.
• Endpoint and Trunk Group Classes of Service: Each endpoint and trunk group can
be assigned one or more classes of service (COS) to restrict or allow certain digit pat-
terns when an outside call is dialed. Trunk group COS is not checked if ARS is used.