Nortel Meridian SL-100 Reference Manual page 105

For more detailed information, see the Meridian Communications Adapter
(MCA) Reference Manual, 555-4001-123.
The MCA is equipped with the Hayes dialing feature. This feature enables
the user to originate data calls to local and remote DTE directly from a data
terminal keyboard or personal computer if connected to the MCA.
Users of personal computers already equipped with a Hayes Smartmodem or
users who have a stand-alone Hayes Smartmodem can substitute the MCA
for MSL-100 data integration. The Hayes dialing feature, when used with
third party communication software and the digital telephone, supports most
of the Hayes Smartmodem features. Third party terminal emulation
packages can also be used with Hayes dialing.
The MCA supports the following features:
enhanced Hayes commands, including upper and lower case dialing,
voice call origination through AT dialing, data call disconnection, and
on-line disconnect of voice call,
script files allowing you to program multiple data resources for
automatic resource access.
Meridian SuperNode MSL-100 Meridian Modular Telephones Reference Manual MSL11
Performance specifications 4-9