Comtrol Multiport Modems Windows NT - Manual (Page 46)

Troubleshooting and Technical Support 46
Before calling Technical Support
Before calling
Technical Support Comtrol has a staff of support technicians available to help you.
You should review Troubleshooting and run through the diagnostics before calling
Technical Support. In addition, the web site has
On-Line Technical Support
available. If you call for Technical Support, please have the following information
available.
XonChar, XoffChar Supported
Unsupported IOCTL
Functionality
Status
IOCTL_SERIAL_XOFF_COUN
TER
Not supported
IOCTL_SERIAL_SET_HANDF
LOW
(unsupported options) SERIAL_DSR_HANDSHAKE,
SERIAL_DCD_HANDSHAKE,
SERIAL_DSR_SENSITIVITY
IOCTL_SERIAL_GET_COMM
STATUS
(unsupported options)
fDsrHold, fRlsdHold
Device Control Block
Settings
Status
Item Information
Hardware Type
Hardware Serial Number*
Operating system type
Driver part number and revision level of
Rocket.sys
Server computer make, model, and speed
Other serial port adapters installed in the
server and their COM port numbers
Devices connected to the board