AT&T MERLIN LEGEND Data Manual page 49

Planning
See System Planning (Key or PBX) for
instructions for reassigning station
extension numbers. (The same
instructions are used for data as for
voice stations.)
Digital Data Stations
See System Planning (Key or PBX) for
instructions for reassigning station
extension numbers. (The same
instructions are used for data as for
voice stations.)
Local Host Computer Data
Stations
See configuration 1 on Figure 1-3 in this
guide.
Planning Form Instructions
Record the station jack assignments for analog data stations on System
Form 2a, System Numbering—Station Jacks:
1. In the "Jack Type" column, make sure there is a "B" next to the number for
each basic station jack.
2. In the "Person, Location, or Function" column, write "modem," then identify
each analog data station by person, location, or function.
A
digital data station consists of a PC or a data terminal connected to a data
module. This station does not include a telephone.
Although only one logical ID is assigned to each digital station jack, the system
automatically assigns two extension numbers: the extension number shown on
Form 2a is assigned to an MLX telephone connected to the digital station jack,
and a second extension number is assigned to each jack. The second extension
number is reserved for an adjunct such as an analog data station connected to
the MLX telephone through an MFM or a digital data station connected through
a data module and data terminal. Both extension numbers are automatically.
assigned whether or not the station includes an MFM or ISDN 7500B Data
Module. Calls can be placed to both extension numbers independently. Note
that an MLX station cannot have both a data module and an MFM. The digital
data station uses only the adjunct extension.
Each digital data station connects to a digital station jack on a 008 MLX module.
Planning Form Instructions
Record the station jack assignments for digital data stations on System
Form 2a, System Numbering—Station Jacks:
1. In the "Jack Type" column, make sure there is a "D" next to the number for
each digital station jack.
2. In the "Person, Location, or Function" column, write "ISDN 7500B Data
Module" and identify each digital data station by person, location, or
function.
3. Fill in System Form 2b with the logical ID and the extension number of the
ISDN 7500B Data Module.
A
local host computer data station consists of a local host computer (sometimes
called a "mainframe" computer), a data terminal, and a data module. Digital
signals from the data station are converted by the data module to RS-232 data
signals (and vice versa) so that the host computer can receive the signals.
Modems convert digital data signals to analog signals (and vice versa).
3-5
Station Jacks