VOIP breaking up

VOIP setup and troubleshooting
User avatar
lodperera
Exetel Staff
Posts: 98
Joined: Mon Nov 28, 2011 10:26 pm

Re: VOIP breaking up

Post by lodperera » Wed May 09, 2012 1:22 pm

I have held many conversations with persons interstate, covering periods in excess of 2 hours at a time and at times of day where I have experienced problems with the Exetel service.
Skype is an advanced software which can compensate jitter correction and has QoS which is able to provide higher call quality against the normal NB9W that you use :( .

As Exetel we only provide a VoIP service which should obviously have a satisfactory internet connection. Or else the End User should have an advanced software or hardware which should have Adaptive jitter buffer & packet-loss concealment features. :wink:

User avatar
Dazzled
Volunteer Site Admin
Posts: 5998
Joined: Mon Nov 13, 2006 1:16 pm
Location: Sydney

Re: VOIP breaking up

Post by Dazzled » Wed May 09, 2012 2:15 pm

abbo56, your hardware hasn't got enough memory to implement large jitter buffers, but your computer has - hence lodperera's observations on Skype running on the computer. Skype unfortunately isn't SIP.

There is a SIP softphone that may be worth experimenting with to see if a modest adjustment can help on your jittery exchange - Linphone for Windows http://www.linphone.org/. This app has a resource file, which enables user adjustment for the audio RTP jitter buffer. See http://www.linphone.org/eng/documentati ... phone.html. Ekiga (Linux) can also do this. The idea is to buffer up more milliseconds of conversation to give the software a chance to repair the audio stream. The trade-off for too much buffering is delay. The standard setting is only 60 ms of talking.

abbo56
Posts: 30
Joined: Wed Jul 23, 2008 5:25 pm
Location: Australia

Re: VOIP breaking up

Post by abbo56 » Sun May 20, 2012 10:52 am

Thanks for your assistance Dazzled and lodperera
Regards
Abbo

Post Reply