Flow Control - Inter-Tel AXXESS Manual

Appendix B — RS232
® ®
INTER-TEL AXXESS
NOTE:
need to make sure that the other device has hardware flow control turned on. The other device
should be using RTS/CTS or DTR/CTS flow control. If the other device uses any other pins for
hardware flow control, you will need to make your own custom adapter or cable to support such
a non-standard form of hardware handshaking.
8.7
attached to a PC running Windows 95 or Windows 98, the PC's serial port transmit buffer
FIFO must be set to "Low" (1 byte) since the PCDPM's data input buffer is very small (15
bytes).
NOTE:
4.0. And, unless the 16550 UART FIFO option has been purposely enabled, it does not apply to
PCs running Windows NT 3.51 or Windows for Workgroups 3.11.
1.
2.
3.
4.
5.
6.
Page B-10
MANUAL VERSION 11.0 – May 2008
If you plan on attaching the PCDPM to anything other than a PC serial port, you will
Windows 95/98 or Windows NT 5.0 Advanced Port Settings: If the PCDPM will be
This procedure does not apply to PCs running Windows 3.1 or earlier or Windows NT
From the Start Menu, select
Double-click on , and then select
System
Double-click on , and then double-click on the appropriate COM port icon (or
Ports
select and then select
COM port
attached to the PCDPM.
Select , and then select
Port Settings
In the Advanced Port Settings window (shown below), set the Transmit Buffer setting
to by moving the slide control all the way to the left.
Low (1)
Select to save the new setting, exit back out of Control Panel, and then reboot the
OK
PC.
and then
Settings Control Panel
Device Manager
). Be sure to select the COM port physically
Properties
.
Advanced
.
.

Flow Control