ASAI and Domain Control

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.

5-24Issue 7 May 1998

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Lucent Technologies 555-230-220 manual Protocol Error NAK Cause