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MODEM USE WITH THE VORTEX
© Polycom, Inc. 27 Conference Composer User Guide
After both sides are setup, you should be able to A
UTOSCAN
from the remote end.
Autoscanning will have your modem dial the remote site and connect to the remote
modem, which is connected to the Vortex. You can then control the Vortex just like
you were connected to it locally.
T
ROUBLESHOOTING
THE
V
ORTEX
M
ODEM
C
ONNECTION
VERIFY THAT THE
VORTEX IS SENDING
THE CORRECT INIT
STRING
On the Vortex side, connect the Vortex RS-232 port to the PC (you may need to
remove the null modem adapter). Next, open the C
ONSOLE
window in Conference
Composer (right-click on the COMM port in the Explorer menu and choose C
ONSOLE
from the pull down menu) or some other terminal program. Now, send a F**PING
command and make sure the Vortex responds with a PONG. This verifies the cable
connection between the PC and the Vortex. Now, cycle the power on the Vortex while
leaving the terminal window open. When the Vortex reboots, you should see it send
the modem initialization string to the terminal window. If you are using the default
modem init string, you should see ATE0F1&B1S0=2 echoed in the terminal window.
If you don’t see the string, you will need to double check that the string is set cor-
rectly and that it is enabled.
MAKE SURE THE
INITIALIZATION
STRING IS SENT TO
THE MODEM
If you are sure that the correct modem init string is being sent out when the Vortex
reboots, then connect the RS-232 cable between the Vortex and the modem (you may
need to add a null modem adapter). Make sure the modem is powered on, then cycle
the power to the Vortex. This ensures that the Vortex sends the init string to the
modem.
DOUBLE CHECK THE
CABLE BETWEEN THE
MODEM AND THE
VORTEX
Depending on your serial cable and your modem, you may or may not need a null
modem adapter. The Vortex RS-232 port is configured as a DCE. Most modems are
also configured as a DCE, so you will most likely need a null modem (The serial ports
of most PCs are configured as DTE, which means you don’t need a null modem to
communicate between the Vortex and a PC).