Conventions Used in This Document
■Denial (NAK) Cause(s)
This heading designates a negative acknowledgement (NAK) from the ECS. This means that the information provided by the adjunct to the ECS was incorrect; for example, one of the parameters, such as the call_id, was incorrect. At this point the ECS rejects the request and terminates the communication channel between the ECS and the adjunct. The ECS also provides a reason why the operation was not performed. These reasons or causes fall under the Denial (NAK) Cause(s).
Each ASAI capability contains a Denial (NAK) section with a list of cause values most commonly occurring. An attempt was made to have these lists complete. However, due to various unpredictable ECS/feature interactions, it is not possible to provide a complete list. Therefore, application and ASAI library writers should be able to handle any other (valid) cause values not listed under the particular capability.
■Protocol (NAK) Error Cause(s)
This heading designates a protocol processing error.
■Considerations
This heading provides the user with any special information that should be taken into account for a particular capability.
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