Let me clarify your statement
if the connection between 2 elastix is IAX (using single port forward)
I can use V2Ray's dokodemo alone to connect 2 elastix and calls
China-to-HongKong should be no problems. If you have public IP in China office, HongKong-to-China VoIP will not have problems. If you do not have public IP, you need to establish the reverse-proxy-method, which I have never tried it before.
if i use sip phone on 1 site to connect to elastix on the remote site
because sip connection require 5606 for handshaking and voice signaling thro port 10000 to 20000
I have to setup vpn (openvpn) to establish the connection and
accommodate multiple port forwarding for the voice call
in that case it should make reference to your V2ray dokodemo and openvpn thro it
Thank you for your information about the choices of DDNS services. You are right that using mainland China's DDNS may cause problems as I experienced it before. The mainland Chinese DDNS does not resolve non-mainland-China IP.
As for your case, please do not worry as I shall create another post for your issue such that we can concentrate on the problems you have.
回復 16#角色
Thank you for your info and update
finally i see the light
[very depress and annoying in the past 3-4 months everyday getting jam for inhouse internal calls]
i will try to buy raspberry pi and see if I can ok. I agree it may be the most easy way without alternating a lot on existing network
[I am afraid to alter the router (shibby tomato on rt-n16) ]
I hope i can return with good news.
and there are so many articles here from u I have to spend time to digest and trial and error.
Tks again
Based on my findings, using V2Ray's dokodemo (port forwarding method) should help you in ...
角色 發表於 2019-3-19 13:13
Let me clarify your statement
if the connection between 2 elastix is IAX (using single port forward)
I can use V2Ray's dokodemo alone to connect 2 elastix and calls
if i use sip phone on 1 site to connect to elastix on the remote site
because sip connection require 5606 for handshaking and voice signaling thro port 10000 to 20000
I have to setup vpn (openvpn) to establish the connection and
accommodate multiple port forwarding for the voice call
in that case it should make reference to your V2ray dokodemo and openvpn thro it