On 02/15/2012 03:03 PM, Olivier wrote:
Hi,
When someone says "T.38 is not reliable on a (normally loaded and
managed) LAN", would you rather agree or disagree ?
In this case, fax calls are coming in through an analog gateway,
passing trough Asterisk and then going out to ISDN through a digital
gateway.
Comments ?
While I can't speak for Asterisk's T.38 performance (it was barely past
the point of "okay, it compiles" at the time of this datapoint), T.38 in
general can handle nasty network conditions without a problem as long
you enable some sort of error correction (either FEC or packet
redundancy). Case in point, I ran several hundred SIP-based T.38 calls
a month over VSAT links. The links ran anywhere from 550 to 750ms
latency and would average around 1-2% packet loss (averaged over a 5
minute period). Those were with a Quintum ASG400 at the far end and a
Quintum CMS960 going into PRIs at the VSAT hub.
So if T.38 can handle that, it can handle just about anything.
--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
New to Asterisk? Join us for a live introductory webinar every Thurs:
http://www.asterisk.org/hello
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
