DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Commands
8-64change system-parameters maintenance
8
Modem Connection
On page 3 of the example for ms shown below, there are 11 fields that are hidd en
when the Modem Connection? field is set to internal. In this example the
Modem Connection field is set to external, and these ad ditional 11 fields are
visible.
The first 2 fields on page 3 help setup the d ata format for the serial data from the
switch to the modem.There are only two valid c ombinations for these 2 fields:
■Data Bits = 8, Parity = None
■Data Bits = 7, Parity = (odd , even, mark, or space)
The remaining fields are listed below:
SPE
Optional
Boards:
These fields indicate whether a Disk c ircuit pack is present in the system,
and which Packet Interface s lots are administered. If a Packet Interfac e
circuit pac k is physically presen t, the corresponding Packet Interface field
is set to y when the system boots, and no change to that field is allowed. If
the system is equipped with duplicat ed SPEs, a Packet Interface field is
set to y when either SPE carrier contains a Packet Interface circ uit pack in
the corresponding position. If a Packet Interface c ircuit pack is n ot
present, then the value for the Packet Interfac e field is read from
translation data stored on di sk or tape. If the field is set to n, a Packet
Interface circuit p ack may be adminis tered by chang ing the
corresponding Packet Interface field to y.
Modem
Connection Internal or external (internal)
Modem Name This field is 20 characters long and will permit alp ha-numeric
characters to provid e a unique qualifier for a g iven modem. ( )
RTS/CTS
Enabled This field will inform the modem that comm unication with the data
source UART will be driven with RTS/CTS flow control. This field is 6
characters long and is case in-sensitive. (&H1)
Asynchronous
Data Mode This field will configure the mod em as an asynchronous
communications devic e. This field is 8 characters long and is case
in-sensitive. ( )
DTE Auto-Data
Speed This option will adjust the speed of the data source (DTE) UART to
the outgoing (modem-to-mo dem) data rate. So, at maximum this
speed would b e 9600 baud. This field is 6 c haracters long and is
case in-sensitive.
Note that this field sets the link speed between the switch and the
modem. It does not set the speed of the modem. It is not desirable
to have the serial data fill the modem buffer faster than the outgoing
data rate especially because data compression is disabled. ( )