Unfortunately, most North American providers ignore (and in most cases reclassify) it before it reaches their border routers and it will be treated as best effort. Typically, the problems are introduced within the first mile and its simply a matter of getting the packet safely pass the edge unless your ISP is grossly oversubscribed (in terms of servicable traffic limited by their particular hardware and bandwidth).

If it is too costly to move to "second line" or "dedicated" DSL, he should be able to improve audio quality by acquiring a broadband router that has minimal QoS capabilities and adequate CPU (since the majority of them use software based queuing and packet fragmentation). The only caveat is that the degree of success can vary between firmware versions. Some of the consumer (gaming) or small business (VPN) grade routers work well (Linksys, DLINK, etc.).

-metik

From: Tihomir Culjaga

To: freeswitch-users@lists.freeswitch.org

Sent: Monday, October 26, 2009 5:34 PM

Subject: Re: [Freeswitch-users] Setup advice on small LAN

If one of the computers does a big download, it messes with FS in two ways. If a connection is made, the voices are broken up, intermittent and difficult to understand. If the download is long enough, the connection to Flowroute is no longer usable due to registration failure.

In any case, regardless if you are using a dedicated or mixed dsl line you should flag your voice traffic properly.

signaling AF41, RTP EF... your voice traffic must never be flagged as pure date when sending it through open internet!

T.

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