Aborting a Connect Request


After the D - Dial Command or S0 - Ring After Which To Answer command is issued, the modem goes off hook (or may be off hook for S0) and it must be placed on-hook (hang­p;up) before the abort is completed. To abort an in-progress connect command, send any character to the modem. This results in a NO CARRIER response. The result code scanner should be called after the abort character is sent to prevent sending additional commands before the controller and the modem are synchronized again.

Smartcom products send AT<CR>to abort an in-progress connect command. This causes a result code even if the modem is off-hook. If the modem is off-hook attempting to connect, this aborts the connect operation and returns NO CARRIER result code. If the modem is on-hook in command mode, this returns <CR><LF>OK<CR><LF>.

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