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SIP-487 Request Terminated - Sip Error Codes - Sigma Telecom
https://www.sigmatelecom.com/post/sip-487-request-terminated
The traffics which has high PDD delay numbers then also Sip-487 Request Terminated code is high. IVR. Another reason for the high 487 code is IVR. People are closing the phone when they hear a recorded voice and they give up calling. Traffic Profile.
sip - Meaning of "487 Request Terminated" - Stack Overflow
https://stackoverflow.com/questions/22646473/meaning-of-487-request-terminated
The 487 Response indicates that the previous request was terminated by user/application action. The most common occurrence is when the CANCEL happens as explained above. But it is also not limited to CANCEL. There are other cases where such responses can be relevant.
sip 2.0 487 request cancelled ; Sip outoing call issue on ...
https://community.cisco.com/t5/ip-telephony-and-phones/sip-2-0-487-request-cancelled-sip-outoing-call-issue-on-cube/td-p/3094323
I can see sip 2.0 487 request cancelled message in unsuccessful call, didn't understand the reason. Please find attached debugs: ccsip messages , ccapi voip inout , voip dialpeer inout Sh run is also attached.
Call Drops - 487 Request Terminated error. | 3CX Forums
https://www.3cx.com/community/threads/call-drops-487-request-terminated-error.62257/
A "487 request terminated" can be what a UAS will send to the client after the client sends a CANCEL request for the original unanswered INVITE request. Translated this could easily be when a call has taken place but the destination user has "Cancelled" the call before a session has been established, so could be a red herring.
SIP Trunk to Service Provider getting SIP 487 Session ...
https://community.cisco.com/t5/ip-telephony-and-phones/sip-trunk-to-service-provider-getting-sip-487-session-terminated/td-p/2688427
Hi everyone, I have a SIP Trunk from a service provider (Bandwidth.com) that I receive on a Cisco 2901 Router. Eerything's configured and the Inbound calls are working fine, problem is with the outbound calls. Whenever we make a call we get the ringback fora couple of rings and then the call drops...
SIP response status codes - WebSitePulse
https://www.websitepulse.com/kb/SIP_response_status_codes
487 Request Terminated The request was terminated by a BYE or CANCEL request. This response is never returned for a CANCEL request itself. 488 Not Acceptable Here The response has the same meaning as 606 (Not Acceptable), but only applies to the specific resource addressed by the Request-URI and the request may succeed elsewhere.
Understanding SIP CANCEL - Tao, Zen, and Tomorrow
https://andrewjprokop.wordpress.com/2014/05/07/understanding-sip-cancel/
She does this by stopping the ringing and returning a 487 Request Terminated to Andrew. The 487 is the final response for the INVITE sequence. This causes Andrew to respond with an ACK. It’s absolutely crucial that the 487 be sent. Otherwise, Andrew (and any stateful proxies between Andrew and Jennifer) will not properly release the session.
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