0 votes

i can't receive calls.

They say me: sip 503 - dns timeout zoiper

I need your help please

in Windows by (120 points)

1 Answer

0 votes

The SIP 503 error means that the DNS server is not responding at times. You can try replacing the hostname with an IP address. It may also be a firewall issue.

We suggest that you contact your VoIP service provider and ask them why you are seeing this error message.

by (320 points)
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