Codec issue? maybe

General Help
1

Hello, I have a problem. I can call, and I have connection but nothing is heard.
Why?

I probed.

Test Result
Without router from pc
- trough Ast. 0
- direct SIP 0
Without soft firewall
- trough Ast. 0
- direct SIP 0
direct sip connection
- from pc 0
- from wifi pda 1
- from 3G pda 1
From pda trough Asterisk 0

So I think not router problem.
pc ip 100 with Asterisk and Twinkle Nothing heard
pda ip 102 with wifi working but all port forward (3478, 5060, 10001-20000) are belongs to 100ip.
Codecs speex, gsm, g711u, g711a

What is a problem? How can I found?
How can I test the codecs?

Please write me some cleaver thinks.

2

I would try a different softphone like Xlite for WinXP or VoixPhone (IAX) or Ekiga for Linux

3

How do you think do it solve this for ubuntu codec or what kind of problem?
On android can I use win$? Sorry i think it isnt application, it is setting or installation misstake. But I dont know.

4

it’s not a codec issue, when there are incompatible codes the channel will be hungup.

no-way/one-way audio issues are always firewall related.

5

But how coming from firewall? I not use router and firestarter service was stopped. how can I testing?