0 votes

I recived a call failure:

SIP 487 - Request Terminated

interworking, unspecified


in Windows by (160 points)

1 Answer

0 votes

Please check with your provider, i think this error is sent by the server. They might be able to tell you what it is. 

The other possibility is that you are using a router with a broken SIP ALG implementation and it is messing up the packets in one or both directions.

by (11.5k points)
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