Nortel M2000 Reference Manual page 38

Feature description 9
of the DTE changed and no autobaud exists, the prompts transmit at
an incompatible data rate.
When an M2000 Digital Telephone is equipped with the Meridian
Asynchronous Data Option (MADO), the user can make a data call
using Meridian SL-100 Keyboard Dialing (KBD) or Hayes Keyboard
Dialing from the attached terminal. Voice and data communications can
take place simultaneously without interference.
The MADO is compatible with all data terminals having the
characteristics described in Chapter "Performance Specifications,
Table 2, "MADO data characteristics". An M2000 Digital Telephone
equipped with MADO can originate or terminate data calls from other
MADO-equipped M2000 Digital Telephones or any Meridian SL-100
DATAPATH data product
The Meridian SL-100 KBD feature provides Data Terminal Equipment
(DTE) users a means to establish a switched data call to multihost sites
and activate selected telephone features, such as Speed Calling,
Autodial, and Ring Again. The KBD routine may vary with the data
equipment being used, and reference to the user's data terminal
manual may be necessary. For a Meridian SL-100 MADO Keyboard
Dialing routine, refer to the chapter, "Keyboard dialing".
The Hayes Keyboard Dialing feature provides DTE users with a means
to use personal computer software packages requiring a Hayes-type
keyboard dialing command protocol. For a Hayes Keyboard Dialing
routine, refer to the chapter, "Keyboard dialing". Only one type of
keyboard dialing, either Meridian SL-100 KBD or Hayes Keyboard
Dialing, can be active at a time.
The MADO can exist in one of four states: autobaud, Meridian SL-100
KBD, Hayes Keyboard Dialing, or data mode. When the MADO is
powered up, the autobaud state is active until an acceptable autobaud
character is entered. The characters used to set autobaud and
autoparity determine the keyboard dialing type.
If a period (.) and a carriage return are entered, the standard Meridian
SL-100 KBD is activated. If AT is entered, Hayes Keyboard Dialing is
activated.
For incoming calls, the KBD specified in the profile is used. Hayes
Keyboard Dialing is the default.
While in the Hayes Keyboard Dialing state, the MADO returns to the
autobaud state after each command is entered or after a call is taken
down. While in the Meridian SL-100 KBD state, the MADO returns to
Meridian SL-100 M2000 Digital Telephone Reference Manual