Businesses are dependent on
computers and networks. In many
data links, it is vital to be
able to guarantee 100% availability
of the communication. With this
aim in mind, Teldat has developed
solutions for backup through
alternative networks (ISDN,
PSTN, R2) to the access network
thus ensuring availability.
Teldat's ISDN backup devices
are introduced between the modem
and the data terminal and are
capable of detecting malfunction
or unavailability of the line
or even the modem itself. Under
these circumstances, communication
is re-established through an
alternative network, ISDN or
PSTN. The ISDN Backup devices
then constantly monitor the
leased line and when the link
is restored initiates the return
from backup. The devices also
have a feature in order to enable
backup calls during certain
times for certain days of the
week. This prevents backup taking
place at non productive times
thus saving costs.
User
end solution
BIR-U
The BIR-U provides automatic backup
for leased lines through ISDN
or PSTN operating at speeds of
up to 512 Kbps. Backup speed is
64 Kbps (ISDN) or 33.6 Kbps (PSTN).
MITTO
The MTTO offers back-up to high
speed leased lines of up to 2
Mbps. The maximum back-up speed
is 512 Kbps. For this purpose
the MITTO aggregates up to 8 B
ISDN channels in the bandwidth
thus creating a single n x 64
Kbps pipe.
TEMIS-S
device The Temis-S
provides monitors nx64K-speed
circuits in the E1/T1 main link
and in case of failure re-routes
the traffic through an alternative
nx64K-speed path over an ISDN-PRI.
The main link speed (nx64K) ranges
from 64K up to 31x64K.The backup
speed may be the same as the main
link (nx64K) or lower (mx64K)
to save call costs, from 64K up
to 30x64K.
Network end solution
There
are two options:
Connect a BIR/MITTO to another
BIR/MITTO/TEMIS-S, both operating
in a desktop or rack with
the same card.
TEMIS SYSTEM: There are
many situations where the
access lines multiplex on
the network side in E1/T1
links ('Frame Relay' networks).
The concentration solution
on the network side is the
TEMIS system where the availability
of the E1 link channels is
checked (individual at 64K,
aggregated at "n x 64K"
or channels with analogical
calls) and the communication
is re-established through
ISDN primary access channels
in cases where the network
drops.
The
IPmux™ family of multiplexers
transparently converts T1
or E1 circuits to IP packets
for transmission over high
performance IP-based backbones.
It maintains all the features
and functionality of today's
class 4 and 5 switches,
and SS7, PRI and other signaling
protocols end-to-end across
the network. These products
take advantage of the IP
network to deliver voice,
fax, modem and data services
without compromising traditional
PSTN quality.
