670 Matrix ETERNITY NE System Manual
Call Duration Control (CDC)
Call Duration Control (CDC) allows a maximum time limit to be set on internal and external (both incoming and
outgoing) telephone calls. When the maximum call duration is reached, the calls are disconnected, after a warning
tone indicating to the user that the calls in progress will be disconnected.
By limiting the duration of the conversations, CDC helps increase availability of trunks for making outgoing calls
and for receiving incoming calls, which is important in high call traffic situations. Besides increasing trunk
availability, CDC curbs unrelated and unproductive conversations.
How it works
• A is an extension user. B is an external party.
External-Outgoing Calls
• A dials B's number.
• SARVAM UCS will check whether the CDC is applicable on Extension A as well as the Trunk used for
making the outgoing call.
To check whether CDC is applicable on Extension A
• The system checks the CDC Profile applied to A. In the Profile,
• It checks whether the check box, Apply CDC for outgoing calls made from Trunk, is enabled.
• It matches B's number with the entries on Apply CDC for calls matching with numbers list and Do
Not Apply CDC for calls matching with numbers list in the CDC profile.
To check whether CDC is applicable on the Trunk
• The system checks Apply CDC for outgoing calls made from Trunk check box.
The following results are possible:
• The Apply CDC for outgoing calls made from Trunk check box is enabled and a match is found for
the number in the Apply CDC for calls matching with numbers list. The Apply CDC for Outgoing
calls check box is enabled on the Trunk. CDC is applied on the call.
• The Apply CDC for outgoing calls made from Trunk check box is enabled and a match is found for
the number in the Apply CDC for calls matching with numbers list. The Apply CDC for Outgoing
Calls check box is disabled on the Trunk. CDC is not applied on the call.
• The Apply CDC for Outgoing calls made from Trunk check box is enabled and a match is found in
the Do Not Apply CDC for calls matching with numbers list in the CDC profile. The Apply CDC for
Outgoing Calls check box is enabled on the Trunk. CDC is not applied on the call.
• The Apply CDC for outgoing calls made from Trunk check box is enabled and a match is found in
the Do Not Apply CDC for calls matching with numbers list in the CDC profile. The Apply CDC for
Outgoing calls check box is disabled on the Trunk. CDC is not applied on the call.
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