T. Shaw wrote: > > Hello all, > > I have a problem with call quality with my Asterisk setup. I'm doing > > VOIP only so far, but have a zaptel TDM400P in the box not being used. > > The problem i'm having is that when calls are placed, connected, and > > the far-end is reporting that they are experiencing clipping, choppy, > > and garbled voice conversations. So bad that we have to resort to > > using our cell phones. This entire setup is still being built, but any > > phone attached is experiencing this. Call volume is almost nil (under > > 20 total incoming calls a day). This is a small business setup. The > > server is used exclusively for Asterisk, so it isn't a fileserver, or > > anything else. > > > > The setup is as such: > > > > ipphone <--->cisco 2900XL switch <----> Cisco 2621 router <---> dsl > > modem <-->DSL <---> VOIPprovider > > > > I've configured the switch and the router to set priority and qos to > > prioritize voice traffic above data. > > Funny thing is, there is not data REALLY hitting the network. I have > > setup 2 vlans, data vlan, and voice vlan. There are two work stations > > on the network, and neither is being used to hit the internet heavily > > (office is still being setup). > > > > Any pointers or suggestions anyone have for me as to were to look for > > this poor quality? > > It seems only the Far-end (called party), is hearing this and not the > > calling party. > > > > I haven't tried switching out the phones because we only have 1 type, > > and any of the phones i used exhibit these problems. I will try > > softphones to see if it is truly a "networking" issue or Phone issue. > > > > Is anyone using a cisco 2900 switch or router and care to provide > > config samples of their COS/QOS setup? > > > > Thanks! > > > > Terrelle Shaw > > >
I've got a similar setup (which does have a TDM card and voip incoming and outgoing), for some reason an IAX provider (which provides most of our calls incoming and outgoing) has this problem, whereas a different SIP one doesn't seem to. I have checked my traffic shaping script, and everything seems fine, the same provider works flawlesly from home, with a simliar setup (only without a timing source and a cable modem). I'd be very interested to see what you find out. > _______________________________________________ --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