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Henry Bremridge wrote: > I am trying to move to VoIP and currently use Vonage, but am told by "the powers > that be" that voice quality is not good enough. > "Voice quality not good enough" is rather subjective, such that it rivals "it's not working" for being a uselessly ambiguious error report. Though there are most certainly objective standards for the audio characteristics of telephone lines. > Can anyone provide recommendations to improving voice quality? > > Issues that I have seen / heard are the following > > - Implement QoS on the router > Unless every router (and switch) involved honours the QoS that isn't going to make any difference at all. On a LAN this is considerably easier to ensure. > - Upgrade the router > This will only help if the router is the cause of the problem. > - Change from Vonage to another provider > This will only help if Vonage or their interconnect with whoever you are calling is the cause of the problem. > - Change Internet Connection to a fixed line speed (rather than a variable max > rating) > - Make sure ISP does not limit VoIP > Is that H.323, SIP or IAX? I believe Vonage use SIP. Both H.323 and SIP can have issues with NAT. > - Get VoIP phone rather that relying on Vonage > > Do you mean an IP phone with Vonage or a different provider. If you are using some kind of ATA try a different phone and check that it is set up correctly for a UK phone.
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