Get response code 487 when call cancelled by caller

Greetings, I’m trying to detect sip response codes for calls after hangup. It is working fine for most cases but not for cancelled calls. Using the Hangup Cause guide I attached a handler to both the channels but on disconnect, I am getting the following

Technology Cause Code SIP 183 Session Progress, Asterisk Cause Code Normal Clearing

I was expecting a 487 Request Terminated instead which I can see the the packet trace too. The Hangup Cause Mappings guide has no mapping for sip 487 too.

Haven’t found anything yet, can anyone tell me any correct way to get SIP cause codes? We are dealing with SIP only btw.

Thanks a ton

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