ASAI and Call Control
Denial (NAK) Causes
The following causes may be issued for
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Invalid association (CS0/81)
The association does not exist.
Requested facility not subscribed/provisioned (CS0/50) The user has not subscribed for the requested capability.
Out of Service (CS3/27)
The originator of the call is out of service.
ECS Equipment Congestion (CS0/42)
The ECS equipment is experiencing congestion due to traffic overload.
Call Rejected (CS0/21)
The COR check for completing the call failed.
Mandatory Information Element missing (CS0/96)
A required parameter is missing in the request.
Resources not available (CS3/40)
—The request cannot be executed because a call classifier is not available or no trunks are available in the requested trunk group.
—The maximum number of calls being controlled has been exceeded.
■Incompatible Options (CS3/80)
The designated call options are not compatible with the Third Party Make Call request.
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User busy (CS0/17)
The user is busy on another call and cannot originate this call.
No user responding (CS0/18)
The originating address does not pick up the call and cannot be forced
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Invalid number/domain (CS0/28)
An invalid address or extension number is present in the request.
Agent not member of split (CS3/11)
The agent is not a member of the split in this Direct Agent call.
Agent not logged in (CS3/15)
The agent is not currently logged into a split for this Direct Agent call.
Bearer capability not presently available (CS0/58)
There are incompatible bearer services for the originating or destination addresses. For example, the originator is administered as a data hotline station or the destination is a data extension.
