SIP configuration for Zadarma on 3cx

[pawak_t]

Hi All,

I have encountered a problem when configuring the SIP trunk for Zadarma.
I could connect the SIP. But I could succeed only with an incoming call.
However, when I try to make an outgoing call it won't succeed.

I did try setup with Generic-->>SIP // Generic-->>VoIP. //. Generic-->>UDP

the error was replied: Decline (603)


Does anyone have experience with Zadarma?

 

[OlegR_3CX]

Hi there.
Maybe you could talk to the provider team and ask them what is the reason why they sent you this message and then take it from there.