ssip: Return Codes
5 Return Codes
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Each line of the SSIP output starts with a three-digit numeric code of
the form NXX where N determines the result group and XX denotes the
finer classification of the result.
SSIP defines the following result groups:
1XX
Informative response -- general information about the protocol,
help messages.
2XX
Operation was completely successful.
3XX
Server error, problem on the server side.
4XX
Client error, invalid arguments or parameters received.
5XX
Client error, invalid command syntax, unparseable input.
7XX
Event notifications. See Events Notifications in SSIP.
Result groups 1XX and 2XX correspond to successful actions, other
groups to unsuccessful actions. Only the groups defined here may be
returned in an SSIP connection.
Currently, for return codes in the range '100'-'599', only the
meaning of the first digit of the result code is defined. The last two
digits are insignificant and can be of any value. Clients shouldn't
rely on the unspecified digits in any way.
However, the return codes in the range '700'-'800', reserved for
events notification, are well defined in the appropriate section of SSIP
documentation and client applications can rely on them.
In the future, these return codes should be fixed so that clients can
rely on them.
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