Feature Manual References
3.1.19 COS (Class of Service)
6.1.3 Flexible Buttons
Operating Manual References
1.2.1 Making Calls
3.1.15 CO Line Call Limitation
Description
CO line calls are limited by the following features:
Feature Description
Extension-to-CO Line Call
Duration
If a call between an extension user and an outside party is established,
the call duration can be restricted by the system timer selected for each
trunk group. Both parties will hear warning tones at five-second
intervals starting 15 seconds before the time limit. When the time limit
expires, the line will be disconnected. COS programming determines
whether this feature is enabled or disabled. Whether this feature
applies to outgoing calls only, or to both outgoing and incoming calls
is determined through system programming.
CO-to-CO Line Call (except
Unattended Conference Call)
Duration
If a call between two outside parties is established, the call duration
can be restricted by the system timer selected for each trunk group.
Both parties will hear warning tones at five-second intervals starting 15
seconds before the time limit. When the time limit expires, the line will
be disconnected.
If both parties involved in the CO-to-CO line call were established by
an extension (e.g., an extension makes a CO line call, then transfers
the call to an outside party), the time limit applied to the CO line call
that was made first will be used.
Dialing Digit Restriction during
Conversation
While engaged in an incoming CO line call, the dialing of digits can be
restricted. If the number of dialed digits exceeds the limitation, the line
will be disconnected.
Conditions
•During an Unattended Conference Call, the Unattended Conference Recall time is applied. (®
3.1.16 Conference)
•When using LCO lines that do not support Calling Party Control (CPC) signal detection (® 3.1.20 CPC
(Calling Party Control) Signal Detection), the CO-to-CO Line Call Duration timer should not be disabled,
as automatic end of call detection cannot be performed.
PC Programming Manual References
4.11 [2-7-1] Class of Service—COS Settings—TRS— 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
58 Feature Manual Document Version 2008-11
3.1.15 CO Line Call Limitation