1.11.8 Trunk Call Limitation
Description
Trunk calls are limited by the following features:
Feature Description
Extension-to-Trunk Call Dura-
tion
If a call between an extension user and an outside party is established,
the call
duration can be restricted by a system timer selected for each
trunk group. Both parties will hear warning tones at five-second inter-
vals starting 15 seconds before the time limit. When the time limit ex-
pires, the line will be disconnected. COS programming determines
whether this feature is enabled or disabled. Whether this feature ap-
plies to outgoing calls only, or to both outgoing and incoming calls is
determined through system programming.
Trunk-to-Trunk Call (except Un-
attended Conference Call) Du-
ration
If a call between two outside parties is established, the call duration
can be
restricted by a system timer selected for each trunk group. Both
parties will hear warning tones at five-second intervals starting 15 sec-
onds before the time limit. When the time limit expires, the line will be
disconnected.
If both parties involved in the trunk-to trunk call were established by an
extension (e.g., an extension makes a trunk call, then transfers the call
to an outside party), the time limit applied to the trunk call that was
made first will be used.
Budget Management When the preprogrammed call charge limit has been reached, an ex-
tension user will hear 3 warning tones at five-second intervals. It is
programmable whether the line is disconnected after the third tone.
After the
call has ended, the extension user cannot make further trunk
calls until the charge limit has been increased or cleared by an exten-
sion assigned as a manager (® 1.9.2 Budget Management).
Dialling Digit Restriction during
Conversation
While engaged in an incoming trunk call, the dialling of digits can be
restricted. If the number of dialled digits exceeds the limitation, the line
will be disconnected.
Conditions
• During an Unattended Conference Call, the Unattended Conference Recall time is applied. (®
1.14.1.2 Conference)
• When using
LCO trunks that do not support Calling Party Control (CPC) signal detection (® 1.11.10 Calling
Party Control (CPC) Signal Detection), the Trunk-to-Trunk Call Duration timer should not be disabled, as
automatic end of call detection cannot be performed.
® [473] Trunk-to-Trunk Call Duration
PC Programming Manual References
4.11 [2-7-1] Class of Service—COS Settings—CO & SMDR—
Extension-CO Line Call Duration Limit
4.17 [2-9] System Options—Option 2— Extension - CO Call Limitation—For Incoming Call
5.1 [3-1-1] Trunk Group—TRG Settings—Main
→
CO-CO Duration Time
→ Extension-CO Duration Time
9.5 [7-5] Miscellaneous— Dial Digits Limitation After Answering—Dial Digits
162 Feature Guide
1.11.8 Trunk Call Limitation
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