sip 408 request time out

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 I have a problem in zoiper "sip 408 request timeout"
I make sure from my sip account options and it make green correct sign but when I dail its appears that is the call failure:
sip 408 -temporatrily unavailable no user responding
can
in Windows by (120 points)

1 Answer

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server problem

by (190 points)
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