Many modem commands are not standardized, and they vary from one vendor to another. The following modem configurations and commands are essential for modems that are attached to Cisco access servers:
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Hardware flow control—Uses CTS and RTS signaling.
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Lock DTE speed—Sets the serial port of the modem to a fixed data transfer rate.
Locking the speed between the modem and DTE device prevents the
speed from being negotiated downward during the initial call
setup.
- Error correction—Sets error control.
- Compression—Uses the best compression algorithm that can be negotiated between the two communicating modems.
- Show configuration—Shows current modem settings.
- Getting help—Shows all of the AT commands for your specific modem.
- Saving the configuration—Saves
the configuration that you just entered in the nonvolatile RAM (NVRAM)
of the modem.
The Table shows some standard modem initialization strings.
For nonstandard modem commands, refer to the vendor’s manual that
comes with the modem.
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Lab
Activity |
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Your
colleagues also working for the Atlanta Bread
Company would like to dialin to your router.
You will properly configure an asynchronous
connection on your router using the AUX port
and dialin from a remote location. |
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