All settings and explanation:
Configurations of LOCAL server and DEDICATED servers are SOME (Server 2008):
Created 2 extensions - 101,102 (to connect them used eyeBeam(x-lite))
extensions configured to prompt voicemail if softphone disconnected (forwarding rules "Simple" sefault).
Voicemail configured by default 999
VoIP provider_1: Vonage softphone line number_1 linked to estention 101 (on local)
VoIP provider_2: Vonage softphone line number_2 linked to estention 101 (on dedicated)
Outbound rules writed for extention 1
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LOCAL server:
calling 101 and 102 each other - the sound is OK
calling from 101 to 999 - voicemail prompt played OK
calling from 101 via "VoIP provider_1" to Regular phone - sound is OK
Incoming call from Regular phone to "VoIP provider_1" - NO ring on 101 (if 101 connected)
Incoming call from Regular phone to "VoIP provider_1" - voicemail prompt played OK (if 101 disconnected)
DEDICATED server:
call between 101 and 102 - NO sound
call from 101 to 999 - voicemail prompt DID NOT play
call from 101 via "VoIP provider_2" to Regular phone - Rings are OK, but NO sound after being connected.
Incoming call from Regular phone to "VoIP provider_2" - (if 101 connected) party on Regular phone hears me, but I don't hear the party
Incoming call from Regular phone to "VoIP provider_2" - (if 101 disconnected) voicemail prompt played sound OK
In the network settings "STUN server" default 3cx.
VoIP provider setting -> Advanced -> Which IP to use in "Contact".... = External(STUN resolved)
What I need to do?
Why settings same but work differently?