Call Disconnection - Northern Telecom Meridian M3000 Reference Manual

9-20 Keyboard dialing
baud rates. Autobaud the TADO immediately following any TADO
installation or maintenance.
If the data rate of the DTE changes, but the autobaud is not set, an incoming
call transmits at an incompatible data rate.

Call disconnection

Before establishing a data connection, the TADO is in the keyboard dialing
command state even if a number is partially or completely dialed. To release
the partially or completely dialed call before a data connection, enter any
character or drop Data Terminal Ready (DTR) from the DTE.
Drop DTR by switching the DTR switch on the back of the DTE OFF,
switching the DTE OFF, or disconnecting the RS-232-C cable from the
TADO.
Once a data connection is established, follow the steps in Procedure 9-16 to
return to the keyboard dialing command state, then enter the ATH command.
Alternatively, release a call by dropping DTR as previously mentioned.
555-4001-112 Standard 05.01 March 1995