| Description | Number of Called Party Responsible For Unsuccessful
Call detected on this interface. This counter is
incremented when a RELEASE, RELEASE COMPLETE (only when
not preceded by a RELEASE mesg for the same call), ADD
PARTY REJECT, or STATUS message that contains one of
the following cause code values is received (Note:
These cause values apply to both UNI3.0 and UNI3.1):
Cause Value Meaning
17 user busy
18 no user responding
21 call rejected
22 number changed
23 user rejects all calls with calling
line id restriction (CLIR)
27 destination out of order
31 normal, unspecified
88 incompatible destination
NOTE: For this counter, RELEASE COMPLETE
messages that are a reply to a previous RELEASE
message and contain the same cause value, are
redundant (for counting purposes) and should not
be counted.
Note: Cause Value #30 'response to STATUS ENQUIRY'
was not included in this memo since it did not apply
to a hard failure. |