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4. Configuration Options
9700-A2-GB20-20 December 2002
4-63
Configuring the COM Port to Support an External Modem
Select External Modem (Com Port) to display or change the configuration options
that control COM port external device call processing (see
Table 4-26, External
Modem (COM Port) Options ).
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
DB25-to-DB25 Crossover
Cable or DB9-to-DB25 Crossover Cable in Appendix E, Connectors, Cables,
and Pin Assignments
, for cable pin assignments.
Table 4-26. 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.
CAUTION: Do not use this setting when an async terminal is connected to the COM
port (see Table 4-25, Communication Port Options ).
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).
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.