FLEXIBLE MULTIPLEXER E1-XL
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Copyright © 2001 Cronyx
5
Description
Cronyx-E1/XL is a multipurpose device intended
for connection to E1/PCM30 links.
Serving as an interface and rate converter the
device receives data from a digital interface (64
to 2,048 kbps) and allocates it in E1 flow thereby
using the necessary number of timeslots, or the
whole 2,048 kbps bandwidth in the unframed
mode.
Serving as a modem the device allows to build
high-speed data links based on twisted pair or
coaxial cables of up to 1.5 km in length.
Serving as a multiplexer the device enables to
split E1 flow into several (maximum 30) data
flows wherein DTE units using these separated
data flows can be located at a distance of up to
1.5 km. Drop-Insert mode provides connection
layouts of network equipment that considerably
increase the efficiency of E1/PCM30 links.
Stand-alone version of the multiplexer can be at
customer’s option equipped with RS-530, RS-
232, V.35, or X.21 interfaces ended with standard
connectors as well as with built-in Ethernet or
IDSL-modem units. There is also a multiplexer
version with a multi-standard interface ended
with HDB44 connector in which case the
interface type is determined by the adapter cable.
The multi-standard interface supports RS-232,
RS-530, RS-449, RS-422, V.35, and X.21
standards.
Two Cronyx E1XL devices with Ethernet
interface or a combination of Cronyx E1XL and
Cronyx E1L devices with Ethernet interface form
a Remote Bridge for interconnecting two LANs.
In the unframed mode you can use a Cronyx
E1XL device together with a Cronyx PCM2
modem.
The rack-mount version of the multiplexer
represents two physical units one of which is
inserted at the front side of the rack while another
one is inserted at its back side. This version of
the multiplexer is equipped with multi-standard
interfaces only.
Setting of the multiplexer configuration is
executed either using DIP switches, or via a
control port with RS-232 interface. In case of
power failure all configuration parameters are
stored in a non-volatile memory.
If there is nobody at the far end to enable E1 link
loopback it can be activated remotely from the
local node. The in-band management of the
remote device is executed over an additional
monitoring channel which uses a special timeslot
0 bit (in compliance with G.704 requirements)
or any bit of some other timeslot at user’s option.
This monitoring channel is not available in the
unframed mode.
In addition to rack-mount and stand-alone
versions of E1/XL multiplexer there are also
versions available representing cards for IBM
compatible PCs (Cronyx-Tau/E1 and Cronyx-
Tau-PCI/E1 multiplexers).
On-board firmware of desktop multiplexers can
be updated via a console port. New firmware
versions enable to expand multiplexer
capabilities. Downloading of special firmware
versions allows to fully change multiplexer
functionality. The updates are available at
Cronyx web site www.cronyx.ru.
This User Manual describes the stand-alone
version of the device.
Cronyx E1XL rack-mount multiplexers have some
functional differences. Please follow
corresponding instructions supplied with
multiplexers of that type to operate them.
remote (via G.703 line at a remote device)
activated using front panel switches
or via control port
Bit error rate tester ............................................ activated using front panel switches
or via control port
