Escape methods for modem communications

Abstract

Two Escape Methods for modem control are described, both of which are a form of TIES (Time Independent Escape Sequence). Since TIES is more descriptive of the methodology being used, as opposed to a specific protocol or standard, the present specification describes the protocol used in +++AT<CR> escape sequence (in-band escape) and <BREAK>AT<CR> escape sequence (out-of-band escape).

What is claimed is: 
     
       1. A method of controlling a modem connected to a personal computer, comprising the steps of: sending a <BREAK> signal to a modem;   buffering the <BREAK> signal in the modem;   starting a timer to wait for a <CR>;   sending "ATS0=1<CR>" to the modem;   buffering "ATS0=1<CR>" at the modem;   identifying "ATS0=1<CR>" as a valid command at the modem;   causing the modem to escape to COMMAND mode;   executing the command "ATS0=1<CR>"; and   returning the modem to ON-LINE mode.