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Figure 1 |
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Figure 1 |
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You run comm software on your computer |
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You choose a number from the comm software's directory to dial a "host" computer |
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Your software initializes your modem |
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Your modem takes the phone "off hook" and waits for a dial tone |
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Your modem dials the host's phone number |
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The host's modem answers, giving a "carrier" tone (high-pitch whistle) |
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Your modem replies with its carrier (higher pitch) |
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The two modems negotiate speed, starting with a slow speed; your modem suggests a higher speed, and if the host modem can handle it, they agree to use it |
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The host's modem notifies the computer that a user is attached |
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The host computer sends a login prompt |
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You enter your user code and password; if correct, you are "logged on" |
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.......... |
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You give the command to log out |
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The host logs you out, and commands its modem to terminate the connection |
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Your modem notices that the connection is broken, and informs your comm software |
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Your comm software tells you the connection has been broken, and commands the modem to hang up the phone. That's it! |
NG02cr
