I have been with Teliax for some time ... Overall I like the service very much ... The key things offered that got me to go with them (having been with VoicePulse and BroadVoice) was live person in tech support and choice of either SIP or IAX trunking ( I have 4xCalls with the plan I bought ) ...
However, I also had sound quality issues with them early on when I used IAX ... As soon as I switched to SIP, the problem went away and the quality was outstanding ... Also, the New York gateway you are using was still in BETA last time I checked ... You might want to try using the voip-co1.teliax.com gateway with SIP ... See how that works ... If not, give the tech support guys at Teliax a shot ... I have found them to be quite responsive the few times I have needed them ... G.Hendershot -----Original Message----- From: Jim Duda [mailto:[EMAIL PROTECTED] Sent: Tuesday, February 06, 2007 8:10 PM To: asterisk-users@lists.digium.com Subject: [asterisk-users] Help - Poor Voice Quality I'm struggling to get my VOIP installation to be acceptable. I'm looking for advice on what else I can look for. My system: o Teliax VOIP service, voip-ny1 proxy o RCN Cable Internet Service (3Mbps download, 500kbps upload, 6ms average jitter) o 3.2 GHZ P4 Server (runs asterisk, firewall, other stuff) o server lightly loaded o Linux kernel 2.6.19.2 o Shorewall Firewall software with QOS configured for VOIP P1 o Asterisk 1.4.0 o Sipura SPA-2000 o Grandstream GXP-2000 o IAX connection to teliax Outbound voice quality is many times horrible, to the point where ppl say they cannot hear me. The voice often drops out. Inbound quality seems to cut in and out too. I downloaded the myVoipSpeed VOIP analyzer. It indicates that I have plenty of download and upload bandwidth. I also have good jitter. The tool doeesn't find any packet loss whatsoever. My RCN cable company cannot find anything wrong with my cable modem. No packet loss. I'm supposed to be paying for 10M bit downloads, but only getting 3M bit. I've been on the shorewall firewall and confirmed that I have the firewall configured properly for VOIP QOS. I'm using the basic asterisk iax.conf setup with only those changes required to interface with the teliax service. I have the same issues with both the Sipura Adapter and the Grandstream phones, however, I do believe the Grandstream appears worse at times. I've attempted to analyze the IAX traffic using the Wireshark ethernet protocol analyzer. Everything looks okay best I can tell. What else can I do to analyze why the voice quality is so bad? What can I do in Asterisk to help track down where the problem is? I want to make this VOIP work. Thanks for any help. Jim _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users