Solved Outbound Calling not working using SIP.US

[hroberts65616]

I followed the guide from SIP.US for setting up the SIP Trunk: https://support.sip.us/hc/en-us/articles/360034514232-3CX-Version-16- and my Trunk shows registered both in 3CX and on SIP.US website

And I followed their guide for setting up the outbound calling rules.

However I am unable to dial out. When I try it with either a 10 digit or an 11 digit, I get a fast busy. I have even deleted all outbound rules and set 1 up that says if anything is dialed to go to SIP.US and still a fast Busy.

When looking on SIP.US site I am not showing any calls reaching their system. none are showing up in the call detail records. Which makes me think it is being blocked by 3CX.

I have passed the firewall test, and I am lost at what to look at next. Any Suggesstions?

 

[hroberts65616]

After lots of searching this has been resolved for me as well. This post which I found after the fact provided me the answer:

https://www.3cx.com/community/threads/cant-call-out-getting-message-not-acceptable-here.72188/

 

[cobaltit]

So whenever you have trouble sending a call to a provider and it leaves 3CX but the provider rejects it you probably want to talk to the provider since they are the one rejecting it. They should be able to tell you what is wrong and how to fix it, especially if it's a supported provider. And if they can, well you probably want to look for a different provider.