This variable contains the value of who sent the SIP BYE message. Some examples from XML CDRs:
<sip_hangup_disposition>send_bye</sip_hangup_disposition> <sip_hangup_disposition>recv_bye</sip_hangup_disposition> <sip_hangup_disposition>send_refuse</sip_hangup_disposition> <sip_hangup_disposition>send_cancel</sip_hangup_disposition>
Interpretation of these values differs on incoming and outgoing calls since FreeSWITCH is at different ends of the session.
| Value | Incoming | Outgoing |
|---|---|---|
| send_bye | FS sent BYE to the caller (we hung up) | FS sent BYE to the endpoint (we hung up) |
| recv_bye | FS received BYE from the caller (they hung up) | FS received BYE from the endpoint (they hung up) |
| send_refuse | FS rejected the call (e.g. 4xx or 5xx) | Endpoint rejected the call (e.g. 4xx or 5xx) |
| send_cancel | n/a | FS aborted the call (we sent CANCEL) |
Usage:
Look in CDR for the value; only valid after call has ended.
原文：http://www.cnblogs.com/cnsanshao/p/5899028.html