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ASAI and Domain Control
5-24 Issue 7 May 1998
Protocol Error (NAK) Cause
The ECS issues the following cause for 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 a Third Party
Domain Control Request over a Call 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.
Considerations
The capability may not be used to drop a party in the alerting or held state from a
two-party or a multi-party call.
On a Domain Control association, only the Domain-Controlled extension can be
dropped, not other parties as with the Third Party Selective Drop capability of the
Call Control capability group (see Chapter 4, ‘‘ASAI and Call Control’’).
If a call has User to User Information (UUI) that came from an ISDN
DISCONNECT message or in a Third Party Drop Request stored with it, and a
party drops from the call and a Drop Event Report is sent, then the UUI is included
in the report. The UUI passed in this request is only reported with other Drop
Event Reports for the same call.