Transfer
Transfer two calls together.
Unanswered incoming calls cannot be transferred but can be diverted using the divert API.
If the user has only two calls and wants to transfer them together, the callId1 and callId2 parameters are optional and when not provided the calls are automatically selected and transferred.
If the user has more than two calls and wants to transfer two of them together, the callId1 and callId2 parameters are mandatory to specify which calls are being transferred. Those are also commonly referred to as Attended Transfer, Consultative Transfer, or Supervised Transfer and will return a 204 response.
If the user wants to transfer one call to a new destination but only when the destination responds, the callId1 and destination parameters are mandatory to specify the call being transferred and the destination.
This is referred to as a Mute Transfer and is similar to the divert API with the difference of waiting for the destination to respond prior to transferring the call. If the destination does not respond, the call is not transferred. This will return a 201 response.
Body Parameters
The call identifier of the first call to transfer. This parameter is mandatory if either callId2 or destination is provided.
The call identifier of the second call to transfer. This parameter is mandatory if callId1 is provided and destination is not provided.
The destination to be transferred to. The destination can be digits or a URI. Some examples for destination include: 1234, 2223334444, +12223334444, tel:+12223334444, user@company.domain, sip:user@company.domain. This parameter is mandatory if callId1 is provided and callId2 is not provided.
Response Codes
The list below describes the common success and error responses you should expect from the API:
| Code | Status | Description |
|---|---|---|
| 200 | OK | Successful request with body content. |
| 201 | Created | The request has succeeded and has led to the creation of a resource. |
| 202 | Accepted | The request has been accepted for processing. |
| 204 | No Content | Successful request without body content. |
| 400 | Bad Request | The request was invalid or cannot be otherwise served. An accompanying error message will explain further. |
| 401 | Unauthorized | Authentication credentials were missing or incorrect. |
| 403 | Forbidden | The request is understood, but it has been refused or access is not allowed. |
| 404 | Not Found | The URI requested is invalid or the resource requested, such as a user, does not exist. Also returned when the requested format is not supported by the requested method. |
| 405 | Method Not Allowed | The request was made to a resource using an HTTP request method that is not supported. |
| 409 | Conflict | The request could not be processed because it conflicts with some established rule of the system. For example, a person may not be added to a room more than once. |
| 410 | Gone | The requested resource is no longer available. |
| 415 | Unsupported Media Type | The request was made to a resource without specifying a media type or used a media type that is not supported. |
| 423 | Locked | The requested resource is temporarily unavailable. A Retry-After header may be present that specifies how many seconds you need to wait before attempting the request again. |
| 428 | Precondition Required | File(s) cannot be scanned for malware and need to be force downloaded. |
| 429 | Too Many Requests | Too many requests have been sent in a given amount of time and the request has been rate limited. A Retry-After header should be present that specifies how many seconds you need to wait before a successful request can be made. |
| 500 | Internal Server Error | Something went wrong on the server. If the issue persists, feel free to contact the Webex Developer Support team. |
| 502 | Bad Gateway | The server received an invalid response from an upstream server while processing the request. Try again later. |
| 503 | Service Unavailable | Server is overloaded with requests. Try again later. |
| 504 | Gateway Timeout | An upstream server failed to respond on time. If your query uses max parameter, please try to reduce it. |
Header
Body
- The call identifier of the first call to transfer. This parameter is mandatory if either `callId2` or `destination` is provided.
- The call identifier of the second call to transfer. This parameter is mandatory if `callId1` is provided and `destination` is not provided.
- The destination to be transferred to. The destination can be digits or a URI. Some examples for destination include: `1234`, `2223334444`, `+12223334444`, `tel:+12223334444`, `user@company.domain`, `sip:user@company.domain`. This parameter is mandatory if `callId1` is provided and `callId2` is not provided.