On Mon 19 Feb at 10:58 Tony Molina (3:632/309) wrote to All:

 TM> Been speaking to Telstra service and difficulties for the 
 TM> last few days. Although quite helpful, we still haven't 
 TM> been able to track this problem down. It's a doozy.

 TM> What is happening is that modem speeds up to 14.4k work 
 TM> fine, but going the next step to 28.8k is no good. I get 
 TM> good reliable 28.8k connects (V42/LAPM) but then there 
 TM> are pauses of varying lengths between screen displays 
 TM> from the remote modem. The pauses get worse and worse 
 TM> and usually, within 2 or so minutes it hangs up, 
 TM> "click". NO CARRIER.

Can you try forcing V.34 at a lower speed e.g. 14400 bps?

Some modems have retraining disabled by default (not a good idea), and
therefore V.32bis 14400 bps may work fine and V.34 with initial connect at
28800 bps and retrains disabled may mean that (eventually) the link
disconnects.

Are retrains enabled at both ends of the link?

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