AT&T MERLIN LEGEND Release 3.1 System Programming Manual page 697

Data Features
2B Data
Use this procedure to program an MLX port for 2B Data capability. Assigning a
port for 2B Data allows both B-Channels of a single MLX port to be used for up
to 128 Kbps data calls. 2B Data capability is available on in Release 4.0 and
later.
Consider the following when programming ports for 2B Data capability:
The extension number of the port cannot be the first or fifth port on an
MLX module. These ports are designated as potential operator ports and
cannot be used for 2B Data connections.
The extension number must correspond to the adjunct extension number
of an MLX port. By default these extensions begin with "7."
Devices that are not intended for 2B Data should not be connected to a
port programmed for 2B Data. These devices probably will not work.
Summary: 2B Data
Programmable by
Mode
Idle Condition
Planning Form
Factory Setting
Valid Entries
Inspect
Copy Option
Console Procedure
PC Procedure
Procedure: 2B Data
Console Display/Instructions
1 Go to the second screen of the system programming menu.
System manager
Key, Hybrid/PBX
Required
Data Form 2b, Digital Data Station
None
Adjunct extension number up to four digits
Yes
No
Dial adjunct ext. no.
Type adjunct ext. no.
Additional Information
Press More.
Programming Procedures
PC
4–325