How do I reduce echo and delay over a 56K dialup VoIP service? Unfortunately a dialup line is not ideally suited...
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to provide high quality VoIP (at least with today's technologies.) Of course if you would normally pay a fortune to long distance service (either because you have a long distance relationship, call your parents all the time or make calls to a country with very high rates) you are probably willing to accept some degradation to save a lot of money. If it turns out your dialup connection does not have very good throughput and you need better quality, then you should really consider DSL, cable modem or some other type of broadband connection to run VoIP.
There are some simple things to check:
You need to remember that there are a couple of things that can affect your dialup throughput - mainly the throughput of your analog dialup connection to your ISP or the performance of your ISP to Internet. These tests will not tell you what is the problem but they will tell you your throughput. If you are getting much less that 56k bit/sec. you will have sporadic VoIP problems.
Related Q&A from Ted Studwell
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