See my other email.... My setup....
VoIP Provider ---> My T1 ---> Asterisk ---> Sip Clients The only time I get robo-voice is when the latency to the VoIP provider is high. Translating from IAX to SIP should not be a problem but maybe it is in the build you have? I run COS on my Polycom segment but with 100 meg switches (9GB Backplane) and 100 MB network, there is little internal latency. I would look to the external IAX segment. W -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Eric Mason Sent: Friday, April 01, 2005 9:22 AM To: [email protected] Subject: [Asterisk-Users] Re: Polycom sound quality problems I don't see any way to tell the Polycom to "ignore" QoS. It's mainly routers and switches that pay attention to QoS, the phone would just set QoS on its outgoing packets. Anyway, here's what's in the QoS section- it all seems to be related to sending packets: QoS RTP 802.1Q User Priority IP ToS Minimize Delay Enabled Disabled IP ToS Maximize Throughput Enabled Disabled IP ToS Maximize Reliability Enabled Disabled IP ToS Minimize Cost Enabled Disabled IP ToS Precedence Call Control 802.1Q User Priority IP ToS Minimize Delay Enabled Disabled IP ToS Maximize Throughput Enabled Disabled IP ToS Maximize Reliability Enabled Disabled IP ToS Minimize Cost Enabled Disabled IP ToS Precedence Other Protocols 802.1Q User Priority The problem is not that it's choppy or breaks up. Asterisk is connected to the phone through two 100mbit switches, so throughput isn't a problem. It just sounds very distorted, like a cross between a robot and Donald Duck. It really seems to be a problem with the way Asterisk is bridging the call from IAX to the phone. It does SIP <-> SIP bridges (not reinviting) just fine. Noah Miller wrote: > Hi Eric - > >>>> I'm having a problem with my Polycom phones and hoping someone else >>>> has experienced the same thing: Outbound calls are fine, and >>>> inbound calls originating from another SIP phone are fine, but >>>> inbound calls to the Polycom phone from an IAX channel sound like >>>> you're talking to a robot. The person on the Polycom sounds fine >>>> to the person on the IAX channel, however. Inbound calls to our >>>> soft phones sound just fine. >>>> >>>> Asterisk 1.0.5 on Debian (also had the problem with 1.0 on Fedora) >>>> Polycom SoundPoint IP500 SIP Sixtel is the IAX provider. >>> >>> >>> Check to see what codec is being used for the call. >>> Sean >>> >> Default is U-law, but I also switched it to A-law with the exact same >> results. > > > I might check out QoS. You can specify TOS tagging on your IAX channels > in iax.conf, and the Polycom phones are able to respond to TOS tagging > (in ipmid.cfg - or in the web interface under "Core Conf"). Maybe they > are are trying to do two mutually exclusive kinds of TOS tagging? You > can tell the Polycom phone to just not respond to TOS. > > - Noah > _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
