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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Commands and Trouble-Clearing Aids
Page 8-37change system-parameters maintenance
8
Modem Connection
On page 3 of the example forms, 11 fields disappear when the “Modem
Connection?” field is set to internal. In this example the “Modem Connection”
field is set to “external” revealing the 11 fields.
The first 2 fields on page 3 establish the data format for transmitting serial data
from the switch to the modem. The field names are, “Data Bits:”, and “Parity?”.
The two valid combinations for these 2 fields are:
■ Data Bits = 8, Parity = None
■ Data Bits = 7, Parity =(odd, even, mark, or space)
Modem Connection
Valid entries are
internal
or
external
. The default is (internal).
Modem Name
This 20-character field accepts alpha-numeric characters to pro-
vide unique qualifiers for specified modems. ( )
RTS/CTS Enabled
This field informs modems that communication with data source
UARTs drive with RTS/CTS flow control. This 6-character field
defaults to (\Q3). This field is case in-sensitive.
Asynchronous
Data Mode
This field configures the modem as an asynchronous communica-
tions device. This 8-character field defaults to (&M0&Q0). This
field is case in-sensitive.
DTE Auto-Data
Speed
This option adjusts the speed of data sources (DTE) UART to out-
going (modem-to-modem) data rates. The maximum speed is
9600 baud.
This 6-character field defaults to blank ( ) and is case insensitive.
Disable Data
Compression
This field deactivates default data compression algorithms in use
by most consumer modems. This 6-character field defaults to
blank (). Similar commands support the AT commands that con-
trol this capability; however, these commands do not operate the
same.
Intel modems require “H%C0” to disable V.42bis & MNP Class 5
data compression algorithms; however, Paradyne products use
“%C0” to disable both algorithms. This field is case in-sensitive;
blank is its default. ( )
Enable Error
Control
This field activates V.42 LAPM and MNP error control protocols, if
available. This 6-character field defaults to blank ( ).
This V.42/MNP/Buffer mode attempts to negotiate V.42 error con-
trols with the remote modem, then transitions to MNP. If this fails,
no error control is used. This field is case in-sensitive.