Avaya Communication Manager Administrator's Manual page 753

Permit Mismatch
This option allows the EIA interface to operate at a rate different than that agreed to in the data module
handshake. (The data module handshake is always the highest compatible rate as determined by the
reported speed option of each data module.) Permit Mismatch eliminates the need to change the
DTE/DLC speed every time a call is placed to/from an endpoint operating at a different speed. When this
option is enabled, the DLC reports the highest optioned speed and all the lower speeds (or the previously
selected autoadjust speed) during the handshake process.
Valid
entries
y/n
CAUTION:
Caution must be used when using this option to send information from a DTE/DCE that is
transmitting data at higher rates than that of the far end. Sustained usage of this type
transmission results in loss of data. Whenever this option is enabled, the DTE must match
the highest speed selected for the associated DLC port.
This option is intended to be used by a DTE device operating locally at a higher baud rate than that of its
far-end connection but transmitting relatively low amounts of data (for example, a user typing at a
terminal). Also, this option may be selected whether Keyboard Dialing is selected.
NOTE:
The Low speed setting is not reported as an available speed when the
field is y.
DLC Option Settings
The following provides additional information on the option settings for DLCs when used with the
following types of devices:
•
Printers
•
Non-intelligent terminals
•
Data terminals and personal computers
•
Host computers
•
Information Systems Network (ISN)
Printers
A DLC port with a companion ADU, when attached to a printer, usually terminates a data call. Therefore,
in this connection, the printer is the endpoint device. The originating device may be attached to a DCP
mode 2 data module (such as the MPDM) or the DLC. A Z3A ADU extends the range of the EIA 232C
connection.
When a receive-only printer (or any printer that does not generate the Transmit Data and DTR leads) is
used, the ADU must be powered from a small plug-mounted transformer (2012D, or equivalent)
connected to pins 7 and 8 of the modular jack. (See ADU User Manual for details.)
Administrator's Guide for Avaya Communication Manager
November 2003
Usage
Enter y to instruct the DLC to operate at the highest selected speed,
which is a higher rate than the far-end data module.
Screen Reference
Data modules
Permit Mismatch
753