On Sun, May 25, 2008 at 01:34:46AM +0300, sara fink wrote: > and another link to check the voip quality: > > http://myvoipspeed.visualware.com/
I'm not sure it's really of any use except that "my stick is bigger than your stick" comparisons. Most VoIP users that I know use VoIP to a specific endpoint, an "Phone Company", i.e. someone that provides them with access to POTS lines. Since each one is different, and each one has their own connectivity, just because a connection works to a specific test site does not mean anything about how well it work to a specific service provider. Since the Internet is a store and forward packet switching network, what really matters in the simplest of terms is how well your ISP is connected to their ISP and so on. The slowest connection in the chain (for any reason) limits all of it. The tests I have run show a great variation in performance from site to site, for example tests in one site can produce wonderful results and moving to a different test site nearby can show the connection to be useless. Peer to peer VoIP is even more temperamental, there are a usually a lot more ISPs in the chain and no one along the way pays for high performance treatment. I used Vonage for 4 years and was very unhappy for the last 2. It so happens a friend of mine is the CTO of a U.S. company that sells web page service and custom VoIP applications to large customers. When his company started a "retail" service, being a friend I was able to try it for free, and found that it consistently much better than Vonage was. The only problems I have had with it started when the cables to Arab countries were cut and Netvision started using alternate routing to the U.S. After about three days, the problem was located and the ISP responsible (theirs, not mine) was notified and it was fixed. I also had a lot of problems using the DNS pointers to his servers (and many others), but it turned out to be my problem. I tried all sorts of tweaks to my name-server with no luck, but it turned out that upgrading to the latest version of BIND fixed it. Of course the large VoIP providers such as Vonage, were firewalled to prevent DDOS attacks and traceroute and ping were of no use. Geoff. -- Geoffrey S. Mendelson, Jerusalem, Israel [EMAIL PROTECTED] N3OWJ/4X1GM ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
