Question : Issues with IP phone

I am working for a small company and we are using an IP phone solution and softphones. We are are all working from our homes and I have a problem with using IP phone from my home. This problem does not occur when I bring my machine to my collegue's home. These are some of the problems I am experiencing:

-Some of the calls are very bad quality
-Issue both with Zoiper and X-lite
-Debugging in softphone did not report any errors
-Network seems fine when tested on http://myspeed.visualware.com/voip/
-Issue both with SIP and IAX
-I have tested my machine in DMZ with same issues
-I have even changed network provider, issues remain
-Issues when tested softphone on another machine at this location

I am running out of options and I soon will be forced to give up. I therefore hope anyone have some advise for some things I can try out.

Thanks
J

Answer : Issues with IP phone

IP telephony over the public internet is hit and miss. You may be simply describing a miss, particularly if you test well with the voip test website you mention . . . perhaps the latency and packet loss are intermittent.

What kind of internet service do you have?

I am assuming by "bad quality" you mean that the voice is garbled or otherwise unclear. Is this true in both directions? Are you using a wireless connection between your PC and your router at your house?

Good luck,
SteveJ