Lucent Technologies Definity Enterprise Communications Server 555-230-220 User Manual

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Event Notification Capabilities
6-6
Issue  7 May 1998 
Event Notification Cancel
This capability enables the adjunct to cancel any notification request (for all calls) 
for a given domain only for the association that received the request.
Information Flow
ECS always accepts the request. If the request is not understood by ECS or is 
received over a non-Event Notification association, ECS aborts the association. 
See Chapter 3, ‘‘Event Reporting and U-Abort Capabilities’’ for more information 
regarding the U-Abort capability.
Event Notification Cancel Parameters
None for this capability.
ACK (Positive Acknowledgement) Parameters
No parameters are contained in the acknowledgement for this capability.
Denial (NAK) Cause
ECS issues the following reason as the cause for not executing the request.
Invalid association (CS0/81)
The association does not exist.
Protocol Error (NAK) Cause
ECS issues the following cause for generating a protocol processing error:
Protocol error (CS0/111) 
The Q.932 protocol has been violated.
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 cancel notification takes effect immediately. Event reports to the adjunct for 
calls in progress cease over this particular association.