Table 7: HTTP Error Messages
| Status Code |
Cause of
Failure |
Failure Message Displayed to the User/Resolution
(“N/A”: Avaya IP Phone will never send the status code) |
| 400 |
Bad Request |
Due to incorrect syntax the server could not understand the request. |
| 401 |
Unauthorized |
The request requires user authentication. |
| 402 |
Payment Required |
N/A |
| 403 |
Forbidden |
The server has indicated it will not respond to your query. |
| 404 |
Not Found |
The server has not found anything matching the request. |
| 405 |
Method Not Allowed |
N/A |
| 406 |
Not Acceptable |
N/A |
| 407 |
Proxy Authentication Required |
The request requires user authentication. |
| 408 |
Request Time-out |
N/A |
| 409 |
Conflict |
The request could not be completed due to a conflict with the current state of the resource. |
| 410 |
Gone |
The requested resource is no longer available. |
| 411 |
Length Required |
The server refuses to accept the request. |
| 412 |
Precondition Failed |
N/A |
| 413 |
Request Entity
Too Large |
The server refuses to accept the request because the request entity is too large. |
| 414 |
Request-URI
Too Large |
The request-URI is longer than the server can interpret. |
| 415 |
Unsupported Media Type |
The server refuses to accept the request because it's in an unsupported format. |
| 416 |
Requested range not satisfiable |
N/A |
| 417 |
Expectation Failed |
N/A |
| 500 |
Internal Server Error |
The server encountered an unexpected condition that prevented it from fulfilling the request. |
| 501 |
Not Implemented |
N/A |
| 502 |
Bad Gateway |
The server, while acting as a gateway or proxy, received an invalid response from the upstream server it accessed in attempting to fulfill the request. |
| 503 |
Service Unavailable |
The server is currently unable to handle the request due to a temporary overloading or maintenance of the server. |
| 504 |
Gateway Time-out |
The server, while acting as a gateway or proxy, did not receive a timely response from the upstream server specified. |
| 505 |
HTTP Version
not supported |
The server does not support, or refuses to support, the HTTP protocol version that was used in the request message. |
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