Disconnect

The Disconnect event is fired when a call ends, for any reason. The cause for a disconnect event on a call can be:

hangup: one party hung up the call, a <Hangup> verb was executed, or there was no more BXML to execute; it indicates that the call ended normally.
busy: the callee was busy.
timeout: the call wasn't answered before the callTimeout was reached.
cancel: the call was cancelled by its originator while it was ringing.
rejected: the call was rejected by the callee.
callback-error: a BXML callback couldn't be delivered to your callback server.
invalid-bxml: invalid BXML was returned in response to a callback.
application-error: an unsupported action was tried on the call, e.g. trying to play a .ogg audio.
account-limit: the account rate limits were reached.
node-capacity-exceeded: the system maximum capacity was reached.
error: some error not described in any of the other causes happened on the call.
unknown: some unknown error happened on the call.

caution

This list is not exhaustive and other values can appear in the future.

Request Parameters

Property	Description
eventType	The event type, value is `disconnect`.
eventTime	The approximate UTC date and time when the event was generated by the Bandwidth server, in ISO 8601 format. This may not be exactly the time of event execution.
accountId	The user account associated with the call.
applicationId	The id of the application associated with the call.
to	The phone number that received the call, in E.164 format (e.g. +15555555555).
from	The provided identifier string of the caller used in the `from` field of the original call.
direction	The direction of the call. Either `inbound` or `outbound`. The direction of a call never changes.
callId	The call id associated with the event.
callUrl	The URL of the call associated with the event.
startTime	Time the call was started, in ISO 8601 format.
enqueuedTime	(optional) If call queueing is enabled and this is an outbound call, time the call was queued, in ISO 8601 format.
answerTime	(optional) Time the call was answered, in ISO 8601 format.
endTime	Time the call ended, in ISO 8601 format.
cause	Reason the call ended. See above for possible values.
errorMessage	(optional) Text explaining the reason that caused the call to be ended in case of errors.
errorId	(optional) Bandwidth internal id that references the error event.
tag	(optional) The `tag` specified on call creation. If no `tag` was specified or it was previously cleared, this field will not be present.
sipCallId	(optional) The SIP Call-ID of the call's current SIP dialog with Bandwidth's SBC. Present on any call, inbound or outbound, once that dialog has been established; may be absent very early in a call before the dialog exists.
sipResponseCode	(optional) The SIP status code of the final response that rejected an outbound call's (or transferred leg's) INVITE (e.g. `486` for busy, `603` for decline). Present only when the call was rejected with a SIP response.
sipStatusLine	(optional) The full SIP status line, exactly as received, of the final response that rejected an outbound call's INVITE (e.g. `SIP/2.0 603 Network Blocked` or `SIP/2.0 603 Decline`). The reason phrase can help distinguish outcomes that share a status code. Present only when an outbound call was rejected with a SIP response.
sipHeaders	(optional) Object of SIP headers from the final response that rejected an outbound call. Currently contains a single key, `reason`, holding the raw, unmodified `Reason` header value (e.g. call-analytics block information from a terminating carrier). If the response carries more than one `Reason` header, all values are returned in the order received, separated by `,` . Present only when the response included a `Reason` header.

Expected Response

HTTP/1.1 204

Examples

Call Ended due to a Busy Signal

POST http://yourUrl.example/disconnect
Content-Type: application/json

{
	"eventType"     : "disconnect",
	"eventTime"     : "2019-06-20T15:55:55.533Z",
	"accountId"     : "55555555",
	"applicationId" : "7fc9698a-b04a-468b-9e8f-91238c0d0086",
	"from"          : "+15551112222",
	"to"            : "+15553334444",
	"direction"     : "outbound",
	"callId"        : "c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
	"callUrl"       : "https://voice.bandwidth.com/api/v2/accounts/55555555/calls/c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
	"startTime"     : "2019-06-20T15:54:22.234Z",
	"endTime"       : "2019-06-20T15:55:54.123Z",
	"cause"         : "busy",
	"errorMessage"  : "Callee is busy",
	"errorId"       : "4642074b-7b58-478b-96e4-3a60955c6765"
}

Call Ended due to a Busy Signal with Enqueued Time

POST http://yourUrl.example/disconnect
Content-Type: application/json

{
	"eventType"     : "disconnect",
	"eventTime"     : "2019-06-20T15:55:55.533Z",
	"accountId"     : "55555555",
	"applicationId" : "7fc9698a-b04a-468b-9e8f-91238c0d0086",
	"from"          : "+15551112222",
	"to"            : "+15553334444",
	"direction"     : "outbound",
	"callId"        : "c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
	"callUrl"       : "https://voice.bandwidth.com/api/v2/accounts/55555555/calls/c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
	"enqueuedTime"  : "2019-06-20T15:51:09.729Z",
	"startTime"     : "2019-06-20T15:54:22.234Z",
	"endTime"       : "2019-06-20T15:55:54.123Z",
	"cause"         : "busy",
	"errorMessage"  : "Callee is busy",
	"errorId"       : "4642074b-7b58-478b-96e4-3a60955c6765"
}

Disconnect Event with SIP Call-ID

POST http://yourUrl.example/disconnect
Content-Type: application/json

{
    "eventType"        : "disconnect",
    "eventTime"        : "2026-06-16T12:35:00.533Z",
    "accountId"        : "9901078",
    "applicationId"    : "7fc9698a-b04a-468b-9e8f-91238c0d0086",
    "from"             : "+15551112222",
    "to"               : "+15553334444",
    "direction"        : "inbound",
    "callId"           : "c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
    "callUrl"          : "https://voice.bandwidth.com/api/v2/accounts/9901078/calls/c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
    "startTime"        : "2026-06-16T12:29:55.000Z",
    "answerTime"       : "2026-06-16T12:30:00.120Z",
    "endTime"          : "2026-06-16T12:35:00.530Z",
    "cause"            : "hangup",
    "sipCallId"        : "c95ac8d6e1a31c52eb38f419893c151633ec68f8d@sbc.bandwidth.com"
}

Outbound Call Rejected

POST http://yourUrl.example/disconnect
Content-Type: application/json

{
	"eventType"     : "disconnect",
	"eventTime"     : "2019-06-20T15:55:55.533Z",
	"accountId"     : "55555555",
	"applicationId" : "7fc9698a-b04a-468b-9e8f-91238c0d0086",
	"from"          : "+15551112222",
	"to"            : "+15553334444",
	"direction"     : "outbound",
	"callId"        : "c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
	"callUrl"       : "https://voice.bandwidth.com/api/v2/accounts/55555555/calls/c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
	"startTime"     : "2019-06-20T15:54:22.234Z",
	"endTime"       : "2019-06-20T15:55:54.123Z",
	"cause"         : "busy",
	"errorMessage"  : "Callee is busy",
	"errorId"       : "4642074b-7b58-478b-96e4-3a60955c6765",
	"sipResponseCode" : 486
}

Outbound Call Blocked by Carrier Call Analytics

A terminating carrier's call analytics blocked the call. The reason value is passed through exactly as the carrier sent it, so you can use the url it contains to request redress.

POST http://yourUrl.example/disconnect
Content-Type: application/json

{
	"eventType"     : "disconnect",
	"eventTime"     : "2026-10-15T15:55:55.533Z",
	"accountId"     : "55555555",
	"applicationId" : "7fc9698a-b04a-468b-9e8f-91238c0d0086",
	"from"          : "+15551112222",
	"to"            : "+15553334444",
	"direction"     : "outbound",
	"callId"        : "c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
	"callUrl"       : "https://voice.bandwidth.com/api/v2/accounts/55555555/calls/c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
	"startTime"     : "2026-10-15T15:55:54.234Z",
	"endTime"       : "2026-10-15T15:55:55.123Z",
	"cause"         : "rejected",
	"errorMessage"  : "Call declined",
	"errorId"       : "4642074b-7b58-478b-96e4-3a60955c6765",
	"sipResponseCode" : 603,
	"sipStatusLine"   : "SIP/2.0 603 Network Blocked",
	"sipHeaders"    : {
		"reason" : "SIP;cause=603;text=\"v=analytics1;url=https://www.att.com/redressC;id=att2\";location=RLN"
	}
}

Outbound Call Declined with a Reason Header

Some carriers return a generic 603 Decline status line for an analytics block. Check sipHeaders.reason to tell the two apart.

POST http://yourUrl.example/disconnect
Content-Type: application/json

{
	"eventType"     : "disconnect",
	"eventTime"     : "2026-10-15T15:55:55.533Z",
	"accountId"     : "55555555",
	"applicationId" : "7fc9698a-b04a-468b-9e8f-91238c0d0086",
	"from"          : "+15551112222",
	"to"            : "+15553334444",
	"direction"     : "outbound",
	"callId"        : "c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
	"callUrl"       : "https://voice.bandwidth.com/api/v2/accounts/55555555/calls/c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
	"startTime"     : "2026-10-15T15:55:54.234Z",
	"endTime"       : "2026-10-15T15:55:55.123Z",
	"cause"         : "rejected",
	"errorMessage"  : "Call declined",
	"errorId"       : "4642074b-7b58-478b-96e4-3a60955c6765",
	"sipResponseCode" : 603,
	"sipStatusLine"   : "SIP/2.0 603 Decline",
	"sipHeaders"    : {
		"reason" : "SIP;cause=603;text=\"v=analytics1;url=https://www.att.com/redressC;id=att2\";location=RLN"
	}
}

Outbound Call Rejected without a Reason Header

When the response has no Reason header, sipHeaders is omitted.

POST http://yourUrl.example/disconnect
Content-Type: application/json

{
	"eventType"     : "disconnect",
	"eventTime"     : "2026-10-15T15:55:55.533Z",
	"accountId"     : "55555555",
	"applicationId" : "7fc9698a-b04a-468b-9e8f-91238c0d0086",
	"from"          : "+15551112222",
	"to"            : "+15553334444",
	"direction"     : "outbound",
	"callId"        : "c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
	"callUrl"       : "https://voice.bandwidth.com/api/v2/accounts/55555555/calls/c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
	"startTime"     : "2026-10-15T15:55:54.234Z",
	"endTime"       : "2026-10-15T15:55:55.123Z",
	"cause"         : "rejected",
	"errorMessage"  : "Call declined",
	"errorId"       : "4642074b-7b58-478b-96e4-3a60955c6765",
	"sipResponseCode" : 603,
	"sipStatusLine"   : "SIP/2.0 603 Decline"
}

Request Parameters​

Expected Response​

Examples​

Call Ended due to a Busy Signal​

Call Ended due to a Busy Signal with Enqueued Time​

Disconnect Event with SIP Call-ID​

Outbound Call Rejected​

Outbound Call Blocked by Carrier Call Analytics​

Outbound Call Declined with a Reason Header​

Outbound Call Rejected without a Reason Header​