One Way Voice Traffic
We have been trying to get this IP phone working at a house off site for some time now. Today, we hooked it up, and if he pages me here at the office, I can hear his voice crystal clear, but if I talk, he can only hear jumble... almost like alien noises...
We have opened almost all ports on his router with the same results. I figure since we have made a connection to his phone at the house, and I can hear him crystal clear, the problem may reside on his end?
How can I test this further? What ports do I need to have open? Is there anything I can do to troubleshoot this. Our IP Phone company is ripping us off on this deal, and we really want this to work. Please let me know if you have any questions. I'm on stand by.
We have opened almost all ports on his router with the same results. I figure since we have made a connection to his phone at the house, and I can hear him crystal clear, the problem may reside on his end?
How can I test this further? What ports do I need to have open? Is there anything I can do to troubleshoot this. Our IP Phone company is ripping us off on this deal, and we really want this to work. Please let me know if you have any questions. I'm on stand by.
Member_2_1968385
Those symptoms sound like a problem with connection speed/bandwidth or mis-matched codecs, not with firewall configuration. If the correct firewall ports aren't open then you would get no audio in one direction. Can you select different codecs on the IP phone? G.729 requires less bandwidth than most others.
i'd agree with feptias. What kind of connection does he have and is there any way to measure QoS on his connection at home? a general bandwidth test to start, both upload and download. If you're using a G.711 codec you'll need about 80 Kbps bi-directional for the RTP stream. You might also check the RTP ports on your router, not just the TCP ports (which are typically signalling only) but if he's getting some sound it probably isn't an issue with the firewall.
you might also want to make sure he's not doing anything else on the network, (VPN connection for example) which might impede performance on the voice side.
you might also want to make sure he's not doing anything else on the network, (VPN connection for example) which might impede performance on the voice side.
ASKER
What exactly is an RTP Ports on a router How do I check those settings...
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ASKER
Ok. changed some settings, and bipassed our networks firewall, and we can get the IP Phone to work outside the network, though with this config, The IP phones inside the network only get one way voice data. (Meaning no noise at all one way)
I assume we just need to open UDP ports on the firewall and point to the local IP Phones.
Sound correct?
I am new to this, so if that proposal sounds ridiculous, disregard it. :)
I assume we just need to open UDP ports on the firewall and point to the local IP Phones.
Sound correct?
I am new to this, so if that proposal sounds ridiculous, disregard it. :)
> I assume we just need to open UDP ports on the firewall and point to the local IP Phones.
Yes, that sounds quite likely if the problem is no audio at all one way, but I got a bit lost with the "what's inside and what's outside your network".
Yes, that sounds quite likely if the problem is no audio at all one way, but I got a bit lost with the "what's inside and what's outside your network".
ASKER
Thanks.