The call center agents have difficulty interpretting the numeric hangup cause code; therefore it is highly desirable to display the hangup cause code description together with the numeric code.
I've just posted a patch on Mantis for for displaying the hangup cause code description in addition the numeric code:
http://www.vicidial.org/VICIDIALmantis/view.php?id=329
The Agent Interface version 2.2.0 r1389, displays the following message for a manual dial call to an unassigned number:
DIAL ALERT:
Call Rejected: CONGESTION
With the patches applied, the following message is displayed:
DIAL ALERT:
Call Rejected: CONGESTION
Cause: 1 - Unassigned Number.
I would be glad if the patches could accepted to 2.2.0 and Trunk.