Hello. Thank you for the opportunity to post my question in this forum.
I was tasked with moving an application from a SCO Openserver 5.0.6 box to a Redhat EL5 box. Due to licensing costs on the application, it was determined that running a virtual instance of SCO Openserver on the RHEL box was the only cost-effective solution. The install went pretty well, with relatively few hiccups, but now I am faced with a problem I am not sure how to solve.
The application uses an external faxmodem connected to COM1 to fax data. I have successfully configured the Guest O/S (SCO) to communicate with ttyS0 on the RHEL machine, and the faxmodem is able to initiate a call and send \*MOST* of the data to the receiving device, presumably a fax machine. However, the recipients have been calling to complain of "scrunched lines." Basically, the received fax prints 10 lines of data, drops 7-15 lines of data and replaces them with one line of "noise," prints another 10 lines of perfect text, drops another few lines... ad nauseum. My developer suggests that the serial port doesn't have a high enough "priority" on the RHEL machine, or that a process on the RHEL machine is interfering with the Guest O/S's use of the serial port.
I am not sure even where to begin tackling this problem, but I sure could use some help.
Some particulars:
VMWare Server Version: 1.0.3 build-44356
Host O/S :RHEL5 Kernel version: 2.6.18-8.1.8.el5
Guest O/S: SCO Openserver 5.0.6
Thanks!