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3-62
9123-A2-GB20-00
May 2000
Configuring the COM Port to Support an External Modem
Select External Modem (Com Port) to display or change the configuration options
that control call processing for an external device attached to the COM port
(see Table 3-17).
Main Menu
→
Configuration
→
Management and Communication
→
External Modem (Com Port)
NOTE:
A standard EIA-232 crossover cable is required when connecting an external
modem to the FrameSaver unit’s COM port. See
Standard EIA-232-D
Crossover Cable
in Appendix C,
Connectors, Cables, and Pin Assignments
,
for cable pin assignments.
Table 3-17. External Modem (COM Port) Options
External Modem Commands
Possible Settings: Disable, AT
Default Setting: Disable
Specifies the type of commands to be sent over the COM port.
Disable – Commands will not be sent over the COM port.
AT – Standard Attention (AT) Commands are sent over the COM port to control the
external device. All AT command strings will end with a carriage return (hex 0x0D) and a
line feed (hex 0x0A).
CAUTION: Do
not
use this setting if you have an asynchronous terminal connected
to the COM port.
Dial-In Access
Possible Settings: Enable, Disable
Default Setting: Enable
Controls whether external devices can dial-in to the FrameSaver unit through the COM
port (based on the Port Use option setting).
Display Conditions
– This option does not appear if External Modem Commands is
disabled.
Enable – Answers incoming calls and establishes connection to the remote terminal or
IP network.
Disable – Does not answer incoming calls.