Cosmin Prund wrote:
Being an ISP I have to disagree - ICMP traffic is rarely prioritized to
"look better"
Most large ISPs actually LIMIT ICMP traffic to counter ICMP flood DOS
attacks.
That does not make it a good indicator of a networks ability to support
voip. Any cheap ATA will have jitter, delay, and packet loss counters -
hook one up and get the real picture.
If you do use ping to pre-qualify a link, grab a copy of pingplotter so
you can tune the icmp packet parameters and packet rate, run it for a
long time or several times during different timeframes to see if there
are periods of congestion.
Unfortunatelly good-old Windows based ping is all I can work with before I
actually sign the contract with the ISP. I need to assess rather the service
might be possible before I start throwing money at it (there's no such thing
as an "test account": I'll need to set up an account, pay the instalation
fees, pay one month in advance for the service then pay for the
disconnect!).
Sooo... what might I find using ping? Is there an "good" ping that shows I
can use the link for VoIP? I gues there's no such thing as "bad" ping
showing I can't use the link because ISP's are limiting ICMP traffic?
You might want to try the tools here:
http://www.dnsstuff.com/
and here
http://centralops.net/co/
--
JP Carballo
http://www.netfone2x.com
Bringing the world closer.
It might look like I'm doing nothing, but at the cellular level, I'm really quite busy.
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