Cannot connect using the voip intergration

[candid karma]

Hello I'm trying to use a VoIP phone to connect with my home assistant.
I've setup the voip intergration and setup IP dailing on the phone. (though it's not a grandstream)

The IP calling seems to work as if i disable the Voip Intergration in HA the call fails, it it's on I just get a busy tone on HA.

I did set it to allow calls from this IP (as it also picked up the Ip on the voip intergration)

But I can't get anything else then a busy tone / call rejected.

Any ideas?

[candid karma]

I've since figured it out, it's the codec
Apperantly only Opus is supported in HA which my hardware VoIP phone doesn't support

Truning it on on the softphone did make it work