S

If in online, handshaking, dialing, or answer process, a transition of DTR ON-to-OFF signals the modem to shut down the communications link. When the modem has completed transmitting the data placed into its buffer by the DTE and has completed sending the received data to the DTE, it does the following:

1. Executes the hangup process

2. Issues an OK result code at the response speed,

3. Remains idle in the command state.

The modem is not reset by DTR. This also aborts any dial, handshake, or answer in progress. DTR transitions to OFF that do not persist more than the time specified by S25 do not trigger a transition to the hangup process.

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