OPERATING THE TRANSCEIVER
USING VCOM SERVICES
126 ENVOY® TRANSCEIVER GETTING STARTED GUIDE
Using VCOM services
VCOM is used to provide virtual COM ports for the following
services:
• 2.4kbps Data Modem
•CICS
• MIL/STANAG 2G Data
• GPS Plotter (available in VCOM version 1.05 and later)
Each of these services may be only be used one at a time by a client
(i.e., they are operated on a “first-come, first-served” basis), which
may cause contention if multiple users try to use the same service.
When attempting to use the 2.4kbps Data Modem or
MIL/STANAG 2G Data service via VCOM and you find that the
port is unresponsive:
1 Ensure that both the RFU GP port and RFU 6-way port are
not configured to use these services (note that the RFU
6-way does not need to be checked in the case of 2.4kpbs
Data Modem as it is not supported on that port).
1 Ensure that any instances of VCOM that may be running on
any connected PCs are not configured to use these services.
CAUTION: On a PC, an application (e.g., RC50-C) may not even
be running and yet the corresponding VCOM
instance may be running in the background and
consuming that service. To check which VCOM
services are enabled on that PC, launch VCOM
Configuration from Start > All Programs >
Codan > VCOM, and disable any services that are
not needed.
1 Ensure that the service isn’t already being used by another
control point, as indicated by the presence of ( ) for the
2.4kbps Data Modem, or ( ) for MIL/STANAG 2G data,
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