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ASAI and Call Control
4-66 Issue 7 May 1998
ACK (Positive Acknowledgement) Parameters
No parameters are contained in the acknowledgement for this capability.
Denial (NAK) Causes
The ECS issues one of the following reasons as the cause for denying the
request:
■ Mandatory Information Element missing (CS0/96)
The party_id is missing from the request.
■ Invalid number/domain (CS0/28)
An invalid party_id or extension number is present in the request.
■ Invalid association (CS0/81)
The association does not exist.
■ Both party_id and resource_id are specified (CS0/80)
■ Resource_id specifies a tone resource and one is not active on the
connection, or the active tone is ringback (CS0/82)
■ A drop that is not allowed was requested (CS3/12)
A drop was requested while the trunk was in the wrong state (for example,
prior to finishing dialing).
■ Message not compatible with call state (CS0/98)
The call is not currently active or is in a hold state and therefore cannot be
dropped.
■ Invalid Information Element contents (CS0/100)
The party_id value is invalid; for example, it is out of range.
Protocol Error (NAK) Causes
The ECS issues the following cause for generating a protocol processing error:
■ Protocol error (CS0/111)
The Q.932 protocol has been violated or the capability invoked is not
consistent with this association. For example, invoking the Third Party
Make Call capability on a Domain Control association is inconsistent.
NOTE:
For more information regarding protocol errors and a complete list of
reason codes (cause values), see the
DEFINITY Enterprise
Communications Server CallVisor ASAI Protocol Reference
,
555-230-221.