56K modem and solaris 2.5

I was using a 28.8 modem on a sparc 5 using solaris 2.5. The ftp transfer was about 1meg in 6min. I have now installed a 56K. I have not noticed any difference in speed. My isp supports 56K. On win95 with the same modem I get 44333bps. How can I configure my solaris to get a higher speed.

Thanks for your help
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jhanceConnect With a Mentor Commented:
Solaris doesn't support sustained serial port data rates above 38kbps, so your throughput of ~1MEG in 6min (which comes to roughly 30kbps) is in the ballpark.  If you need more bps, you'll have to go to a 3rd party serial port solution with onboard hardware buffering.

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