[hylafax-users] Problems debugging serial ports (internal and SIIG)

["Mark Gillingham" <Mark.Gillingham@xxxxxxxxxxxxxx>]

Our setup has three identical Courier V-everything modems. We have been using just one of them for reception for 2 years with little problem. This one is on ttyS1, a motherboard serial port. Recently, we needed to add a second reception line (and we've reduced sending) so I configured an identical modem with the same configuration as ttyS1, but this modem is on a PCI serial card (by SIIG), which we've used successfully for sending. Now the setup is like this:

ttyS1 <- receive-motherboard
ttyS2 <- receive-PCI
ttyS3 -> send-PCI

When testing ttyS2 by using the sending modem on ttyS3, I get good reception results. Most other receptions fail in various ways (I've swapped the modems on ttyS2 and ttyS3). I've kept a list. It dawned on me that the main difference between ttyS1 and ttyS2 is the serial port. It may be that sending from ttyS3 to ttyS2 works because it is from-to the same PCI serial card. If that is the case, I need to do some testing, but I don't know where to begin. Can I test with Hylafax tools? Am I way off base? 

Mark


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