ID of the account that created this call.

Phone number to use as the caller ID. This can be: (a) The To or From number provided in FreeClimb's initial request to your app or (b) Any incoming phone number you have purchased from FreeClimb.

Phone number to place the Call to. For trial accounts, this must be a Verified Number.

ID of the application FreeClimb should use to handle this phone call. FreeClimb will use the callConnectUrl and statusCallbackUrl set on the application unless the callConnectUrl attribute is also provided with the request. In this case, the URL specified in that callConnectUrl attribute will be used as a replacement of the callConnectUrl originally assigned in the application. See applicationId v. callConnectUrl above. The application must have a callConnectUrl associated with it or an error will be returned. The application’s voiceUrl parameter is not used for outbound calls.

The URL that FreeClimb should use to handle this phone call. If an applicationId or parentCallId have already been provided, this callConnectUrl attribute will be used as a replacement of the callConnectUrl originally assigned in the application or parent call. See applicationId v. callConnectUrl above.

Required if no applicationId or callConnecturl have been provided. The ID of the parent Call in the case that this new Call is meant to be treated as a child of an existing Call. This attribute should be included when possible to reduce latency when adding child calls to Conferences containing the parent Call. A call can only be used as a parent once the call is in progress or as an inbound call that is still ringing. An outbound call is considered to be in progress once the outdialConnect or outdialApiConnect webhook is invoked. An inbound call is ringing when the inbound webhook is invoked. If a callConnectUrl attribute is also included with the parentCallId in the request, this URL will be used as a replacement of the callConnectUrl originally assigned in the parent call.

String of digits to dial after connecting to the number. It can include digits 0-9, *, and #, and allows embedding a pause between the output of individual digits. The default pause is 500 milliseconds. So, a string such as 1234# will be played in 2 seconds because of the 4 standard pauses implied within the string. A custom pause is specified by including a positive integer wrapped in curly braces: {n}. For more information, see sendDigits examples above.

Specifies how FreeClimb should handle this Call if an answering machine answers it.

This attribute specifies a URL to which FreeClimb will make a POST request when an answering machine or a fax machine is detected. This URL is required if the ifMachine flag is set to redirect. When ifMachine is set to hangup, ifMachineUrl must not be included in the request. For more information, see ifMachineUrl example above. See parameter timeout for more details about how your call can best determine if an answering machine/voicemail is available at the number called.