Appendix

Status Meaning code

0x486 The called party is busy.

0x487 General faults:

The call was interrupted before a call was established. The status code confirms receipt of the interruption sig- nal.

0x488 The server cannot process the query because the data entered in the media description is not compatible.

0x491 The server notifies that the query will be processed as soon as a previous query has been completed.

0x493 The server rejects the query because the phone cannot decrypt the mes- sage. The sender has used an encryption method that neither the server nor the receiver phone can decrypt.

0x500 The proxy or the receiving device has discovered a fault while executing the query, which makes further execution of the query impossible. In this case, the caller or the phone displays the fault and repeats the query after a few seconds. The number of seconds after which the query can be repeated may be transmitted to the caller or phone by the receiving device.

0x501 The query cannot be processed by the recipient because the recipient does not have the functionality that the caller requires. If the recipient understands the query but does not process it because the sender does not have the necessary rights or the query is not permitted in the current context, a 405 is sent instead of 501.

0x502 In this case, the receiving device that transmits this error code is a proxy or a gateway and has received an invalid response from its gateway via which this query is to be processed.

0x503 The query cannot currently be processed by the receiving device or the proxy because the server is either overloaded or is being serviced. If it is possible for the query to be repeated in the foreseeable future, the server informs the caller or the phone of this.

Status

Meaning

code

 

 

 

0x504

Time limit at the gateway

 

 

0x505

The server rejects the query because

 

the indicated version number of the

 

SIP protocol does not at least concur

 

with the version that the server or the

 

SIP device use that is involved in this

 

query.

 

 

0x515

The server rejects the query because

 

the message exceeds the maximum

 

permitted size.

 

 

0x600

The called party is busy.

 

 

0x603

The called party has rejected the call.

 

 

0x604

The called URI does not exist.

 

 

0x606

The communication settings are not

 

acceptable.

 

 

0x701

The called party has hung up.

 

 

0x703

Connection interrupted because of

 

time-out.

 

 

0x704

Connection interrupted because of a

 

SIP error

 

 

0x705

Wrong dialling tone

 

 

0x706

No connection established

 

 

0x751

Busy tone:

 

No codec match between the calling

 

and called subscribers.

 

 

0x810

General Socket Layer Error: User is

 

not authorised.

 

 

0x811

General Socket Layer Error:

 

Wrong Socket Number

 

 

0x812

General Socket Layer Error: Socket is

 

not connected.

 

 

0x813

General Socket Layer Error:

 

Memory error

 

 

0x814

General Socket Layer Error: Socket

 

not available – check IP settings/con-

 

nection problem/VoIP setting incor-

 

rect

 

 

0x815

General Socket Layer Error:

 

Illegal application on the socket inter-

 

face.

 

 

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