User's Manual

AT**2 Download speed is 57.6k bps.

The "Download initiated" message appears upon issuing the AT**n command.

6. Perform an ASCII upload of the FLM file (e.g., AMDE.S37) from the host computer to the modem

RAM using an industry standard communications software of an equivalent process (ensure that all ASII

transmit or pacing is turned off).

To abort the load at this point, wait for the FLM download process to time-out, send a bad S37 record,

or reset (POR) the modem. If the load process times-out, the modem must be reset (ATZ) before the

FLM can be loaded again.

7. After the FLM has been loaded, perform an ASCII upload of the new modem firmwarehex file (e.g.,

RC288ACi.S37) from the host computer to the modem RAM using industry standard communications

software or an equivalent process. There will be a 3-second pause after the first record of the

RC288AXX.S37 file is sent, which is the FLASH erase cycle. There is no turning back at this point.

If the flash download fails (because of a bad .S37 record for example) or the upload is aborted, as long

as the modem is not turned off or reset, it will remain in the flash load cycle and the upload can be re-

attempted at step 7.

A "Wrong Device" message is displayed if an incorrect FLM is used. In this case, restart at step 5 and

upload the correct FLM file.

A "Wrong Hex file or flow control" message is displayed if an incompatible hex file format is used

(non-Motorola S3 format) or if the DTE ignores flow controls (the flash download uses both Xon/Xoff

and RCS/CTS flow control). If the wrong format was used, reinitiate the upload at step 7 using a correct

firmware hex file.

8. A "Device successfully programmed" message is displayed by the FLM at the completion of a

successful download and the modem will do a cold start.

2.3 Dial Modifiers

This section describes all of the dial modifiers, which are used in dial strings.

@ Answer

"@", placed after a phone number, this modifier tells the modem to wait for 5 seconds of silence before

dialing the next number in the dial string. @ is usually used to access a secure computer system that

provides a silent answer as permission for further entrance.

, Pause

",", placed anywhere in the dial string, tells the modem to pause for the number of seconds specified by S-

! Initiate a Hookflash

"!", placed anywhere in the dial string, tells the modem to initiate a hookflash, which means to hang up for

0.5 seconds and then go off-hook again before processing the rest of the dial string. This modifier allows

access to PBX features like call transferring.