dacseg@uts.amdahl.com (Scott E. Garfinkle) (03/01/90)
I know that variations of this subject have been beaten to death lately, but here goes, anyway. I have a Telebit T18pc (ROM B4.00) internal modem in my ESIX (SVR3.2/386) system. Despite my best efforts, I have been able to achieve only 75-100 cps throughput! This is using both the asy and the fas drivers. The modem is set up on COM2, and there is nothing else sharing the interrupt. I have the following setup in the Dialers script: AT S50=255, S110=0, S111=30, S58=2. Everything else is set at "factory fresh" settings. The line is not audibly noisy, and I have tried with and without echo suppression (S121). Oh, and the speed is set to 19200, of course. Is there anything I should be trying? Scott E. Garfinkle
art@pilikia.pegasus.com (Art Neilson) (03/02/90)
In article <efRY02U58cBD01@amdahl.uts.amdahl.com> dacseg@uts.amdahl.com ({sun,uunet,...}!amdahl!dacseg) writes: >I know that variations of this subject have been beaten to death lately, >but here goes, anyway. > >I have a Telebit T18pc (ROM B4.00) internal modem in my ESIX (SVR3.2/386) >system. Despite my best efforts, I have been able to achieve only 75-100 cps >throughput! This is using both the asy and the fas drivers. The modem is >set up on COM2, and there is nothing else sharing the interrupt. I have >the following setup in the Dialers script: AT S50=255, S110=0, S111=30, S58=2. >Everything else is set at "factory fresh" settings. The line is not audibly >noisy, and I have tried with and without echo suppression (S121). Oh, and >the speed is set to 19200, of course. > >Is there anything I should be trying? > >Scott E. Garfinkle My experience is just the opposite. After reading the recent articles on the net regarding the slow throughput with ISC UNIX even with the X5 update, I had a friend desolder the 8250A's from my 2 T18PC 'blazers and install sockets on both. I purchased 2 NS16550AFN's from JDR Microdevices and installed the parts in my new sockets. My outgoing traffic was around 800 cps, and incomping was a measly 100-200 cps. I then installed the fas drivers, lo and behold the incoming throughput jumped to a whopping 1200 cps, same for the outgoing traffic. The site which provides me my news feed is MUCH happier now, and so am I. You mention installing the fas driver, did you also install a 16550 UART on your T18PC ? fas really can't help you otherwise as it is designed specifically for that part. -- Arthur W. Neilson III | ARPA: art@pilikia.pegasus.com Bank of Hawaii Tech Support | UUCP: uunet!ucsd!nosc!pegasus!pilikia!art