Converts two X.21
data ports to one ISDN basic rate network
port.
Designed to enable
secure ISDN video conferencing.
Connects between the
ISDN video terminal and a BRENT secure
telephone.
Fully automatic operation
with no user configuration required.
Clear 64Kb/second
channel path for each bearer channel ensures
maximum performance.
Can be used with any
128K ISDN video conferencing terminal
that has an auto-answer mode.
Simline
DA Overview
Demand for the
Simline DA grew from a requirement
to carry out video conferencing
sessions over a secure ISDN basic
rate network connection. A Brent
secure telephone scrambles data
sent over the ISDN network and
provides the user with two X.21
ports for the connection of data
terminals. The Simline DA also
has two X.21 data ports which
connect to the Brent, and one
ISDN basic rate network port for
connection to the video terminal.
When the Simline DA detects a
lead change on the X.21 ports
it automatically generates call/s
from it's ISDN network port which
are then answered by the video
terminal to complete the connection.
Status LED's are
provided to indicate activity
at all protocol layers as well
as the bearer (B) channel/s being
used. Once the video conferencing
terminal is set in auto-answer
mode, the operation at each end
becomes fully automatic without
the need for any control software
or user configuration.
Shielded X.21 leads
are available from Astricom as an
option, to enable connection of
the Simline DA and the Brent secure
telephone.
With many units in constant service
you can be sure that the Simline
DA offers a reliable and cost effective
solution for secure ISDN video conferencing.
Astricom undertake a variety of
bespoke connectivity projects. Please
contact
us to discuss your requirements.
Simline
DA - Features
& Specifications
Interfaces
Euro
ISDN compatible I.420 NT connection
via RJ45 socket
