Como todos poderão ver o grupo é muito extenso e completa toda a informação que recebemos de um Voip.
Espero que tenha conseguido dar a todos a oportunidade de poder ter um pouco mais de informação sobre o Voip.
Códigos do Grupo 400 - falhas na requisição da comunicação
Codes are sent when a negative final response to a request from a caller has been received. The problem is on the caller's side.
| Code | Message | Description | Action |
| 400 | 'Bad Request' | Request could not be understood. | Check details and retry. |
| 401 | 'Unauthorized' | Request requires authorisation. | Enter correct username and/or password. |
| 403 | 'Forbidden' | Server has received the request but won't provide the service (i.e. conference call feature). | Conference calling is not currently supported. |
| 404 | 'Not Found' | User does not exist at domain specified. | Check dialling instructions. |
| 405 | 'Method not allowed' | Request contains one or more methods which are not allowed. | Check details and retry. |
| 406 | 'Not Acceptable' | Request cannot be completed by the server. | Check details and retry. |
| 407 | 'Proxy authentication required' | Client must first authenticate itself with the proxy server. | Re-enter correct username and password. |
| 408 | 'Request Timeout' | The server could not respond before timing out. Possible causes: - Service temporarily unavailable. - Wrong SIP proxy settings. - IP proxy not found. | X-Lite is trying to create a voice-channel link via the STUN server. Some routers and firewalls block these by closing ports. Configure your router to open these ports: UDP 3478 - STUN |
| 410 | 'Gone' | Number no longer available, no known forwarding address known. | Unable to make call. |
| 412 | 'Extension Required' | The server is asking you for an additional number. | Enter the extension number. |
| 413 | 'Request Entity Too Large' | What you have requested is too big for the server to process. | Reduce size and retry. |
| 414 | 'Request-URI Too Long' | The URI you have entered is too long for the server to understand. | Check details and retry. |
| 415 | 'Unsupported media type' | Message body of your request is in a format not supported by the server. | Retry using an acceptable format. |
| 420 | 'Bad Extension' | The server didn't recognise the extension entered. | Check details and retry. |
| 479 | 'Routing issue' | It isn't possible to route your call through the network. | Change topology between 'Use local IP address' and 'Discover global addresses'. |
| 480 | 'Temporarily unavailable' | The SIP user you dialled isn't currently online. | Test-call the number of a user who you know to be online. |
| 481 | 'Transaction does not exist' | Server has received a BYE or CANCEL request which it can't match to an existing transaction.(i.e. the call has been terminated) | Call already terminated. |
| 482 | 'Loop Detected' | The server has detected a loop. | Call will be disconnected automatically. |
| 483 | 'Call failed: Too many hops' | Server received a request that required When attempting to access Voicemail (7001) and calling other numbers. | Call will be disconnected automatically. |
| 484 | 'Address Incomplete' | You made a request that doesn't match any existing transaction. | Call will be disconnected automatically. Check details and retry. |
| 486 | 'Busy' | Line is engaged. | Try calling later. |
| 487 | 'Call Terminated' | A BYE or CANCEL request terminated the call. | Call will be disconnected automatically. |
Na medida que vou tendo tempo irei traduzir a postagem espero que todos tenham paciencia e compreendam.
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