AT&T MERLIN LEGEND Data Manual page 60

Planning
See Chapter 2, "Features," of System
Reference for details on Idle Line
Preference.
3-16
Assigning Lines to Data Stations
To allow the user at a digital station access to the digital network for making
and receiving calls to outside digital stations, assign ISDN-PRI lines to digital
stations. If ISDN-PRI lines (with Accunet Switched Digital Data Services) are
not available, the digital data station user can make calls over the regular
analog telephone network only by using a digital-to-analog modem pool.
Note: ISDN-PRI lines can also be used for analog data and voice calls and
can be assigned to telephones to allow the voice user to make and receive
voice calls using these types of facilities. You must use ISDN-PRI trunks with
Accunet Switched Digital Data Services for digital data stations.
The following line button assignments are factory set for Key mode and are
prerecorded on the "Button Diagram" on Data Forms 2a and 2b:
Two Intercom Ring buttons are assigned to all data equipment connected to
a 012 or 008 OPT module.
Two Intercom Ring buttons are assigned to all equipment connected to a
digital station jack on a 008 MLX module.
The factory settings can be changed; however, at least one Intercom button
must be assigned to each data station. To allow the user to make and receive
outside data calls, you must assign outside lines to the data station.
To allow users outside the system access to your modem pool, you can assign
outside lines to the data hunt group that is assigned to the modem pool (you will
assign lines to modem pools later). If a data hunt group is not assigned to the
modem pool, you must assign outside lines to the modem for analog-to-digital
modem pools or to the ISDN 7500B Data Module for digital-to-analog modem
pools.
To dedicate a specific line to receive outside data calls, assign an outside line to
a data station, modem pool, data hunt group, LAN, or local host.
On a digital or analog station the user selects an outside line by dialing the Idle
Line Preference code (usually 9) on an Intercom button. On a digital data station
the user can also select lines assigned to the station by dialing the line number
(801-880) assigned to that outside line.
It is extremely important that the factory-set Idle Line Preference (the line
to which the user is automatically connected when going off-hook) not be
changed. (The user must be connected to an intercom line to activate
features such as Privacy or to select an available outside line by dialing the
Idle Line Preference coda.)
Planning Form Instructions
Locate System Form 2c, System Numbering—Trunk/Line Jacks.
Record your decisions for each data station on the Key Mode "Button
Diagram" of Data Form 2a or 2b. If you want to assign outside lines to the
data station, write the telephone number (from System Form 2c) of the
outside line on the appropriate button. For digital stations, include the line
number.