Voice Call Termination

Local Disconnect
The DTE can disconnect from a telephone call by commanding a mode change to Online Voice Command Mode (if not already in it), and by issuing the H command.

Remote Disconnect Detection
When in Voice Receive Mode, the modem sends the proper shielded <DLE> code when loop break, dial tone, or busy tone is detected. The modem stays in Voice Receive Mode, however, until the DTE issues a key abort to force Online Voice Command Mode. The DTE must issue the H command if it wishes to hang up.

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