Any idea how could i check why there is no audio transmission over a cable network while using openh323.?
Thanks in advanced.
Ulises Vega
Ulises Salvador Vega Arteaga wrote:
Hi,
I've been running some test of H.323 over cable networks with the following configuration
epA(1)-----------------(2) || GK ||(3) ----------(4)|| ISP over Cable network ||(5)--------(6)epB, epC (epB, and epC use same ip address but different siganling, ras, and rtp ports)
|_____(7)epD,epE (dial-up connection 56kbps)
(epD, and epE use same ip address but different siganling, ras, and rtp ports)
(ep, means endpoint)
|| X|| , doble parallel bars means firewall, X represents what is in the middle
*epA is on private ip at (1),
*GK is on a firewall on a server running linux redhat, working fine as a proxy (I know this becuase i've tested voice transmission from dial-up connection outside of the firewall as shown in epD at (7) and I can communicate very clearly with epA, bidirectionally with no problem).
*ISP over Cable network , at (4) has a fixed public IP address attached to epB by MAC matching,
at (5) has private IP adress.
*epB at 6 has private IP address
The situation is a s follows: from epB, i can registert to the GK, establish a call up (setup, connect, opening of audio channels), but udp packets that carry voice cannot pass to epA,or epC, even more
I cannot hear myself when i call epC from epB, eventhough as i said before, connectino is established (arq, acf, setup,..., until opening of audio channels work fine).
Some interesting points might be:
*I have disabled bandwidht management at GK, the requested bandwidht by any ep is 100000 (as default value for initialbandwidth in H323Endpoint). I don't think it is a bandwith problem
because I'm receving ACF from GK. And more, I dont get a connection cleared message with rease NoBandwidthAvailable, even more, audio channels don't get broken because i can stay on the call hearing nothing for as long as i want.
*The same operation was done on dialup connection (epD,epE) and works fine.
Question:
*what should i do to hear myself at least locally (my PC, between epB, and epC) behind cable network LAN?
*what effect might cause a cablemodem on the PC strong enough to not allow hearing myself on the same PC?
*in general, any idea? links that i could rview
*I'm about to run Netmeeting over the cable network to the ouside world to see if ti works, has somebody tried this at home?
Best regards.
Ulises Vega
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