Comments on: Why VoIP Sometimes Doesn’t Work Right http://selkowitz.org/why-voip-sometimes-doesnt-work-right/ The Life and Times of Seattle's Small Business Systems Consultant. Articles and advice on small business phone systems, phone and internet services, VoIP, and all things technology related. Wed, 10 Mar 2010 03:26:28 +0000 http://wordpress.org/?v=2.6 By: Kevin Selkowitz http://selkowitz.org/why-voip-sometimes-doesnt-work-right/#comment-10141 Kevin Selkowitz Tue, 09 Dec 2008 06:50:17 +0000 http://selkowitz.org/?p=171#comment-10141 I'm actually surprised by your use of G.729! Obviously it saves bandwidth, but it is also more sensitive than G.711 to the whims of the public internet. Personally I only recommend G.729 over private networks, but if it works for you - that's what matters! I’m actually surprised by your use of G.729! Obviously it saves bandwidth, but it is also more sensitive than G.711 to the whims of the public internet. Personally I only recommend G.729 over private networks, but if it works for you - that’s what matters!

]]> By: Tom Branch http://selkowitz.org/why-voip-sometimes-doesnt-work-right/#comment-10128 Tom Branch Mon, 01 Dec 2008 04:47:20 +0000 http://selkowitz.org/?p=171#comment-10128 Good article that gets to the heart of the issue. We’re running business-class static IP ADSL with 512k outbound and have two VOIP trunks and a POTS line running into our Talkswitch. The VOIP trunks are used for in and outbound voice and the POTS line is dedicated to the fax inbound and used for outbound voice transfer calls. We used to have problems with packet loss. First, we changed our VOIP trunks to use the G.729 CODEC saving bandwidth. Second, we installed a QoS router allowing us to assign priorities to different kinds of network traffic and reserve bandwidth for the Talkswitch. These changes have allowed us to have quality service and reduced our monthly phone costs by about 40 percent. Good article that gets to the heart of the issue.

We’re running business-class static IP ADSL with 512k outbound and have two VOIP trunks and a POTS line running into our Talkswitch. The VOIP trunks are used for in and outbound voice and the POTS line is dedicated to the fax inbound and used for outbound voice transfer calls.

We used to have problems with packet loss. First, we changed our VOIP trunks to use the G.729 CODEC saving bandwidth. Second, we installed a QoS router allowing us to assign priorities to different kinds of network traffic and reserve bandwidth for the Talkswitch. These changes have allowed us to have quality service and reduced our monthly phone costs by about 40 percent.

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