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| APPLICATION
NOTE:
International Connectivity |
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| SP230
SIGNALING GATEWAY BRIDGES GAPS BETWEEN
SIGNALING PROTOCOLS AND COUNTRIES
From
one continent to another, and every
country in between, carriers can encounter
dozens of in-band and out-of-band signaling
protocols. A single country may even
have multiple signaling protocols operating
simultaneously within its public switched
telephone network (PSTN), a situation
that presents numerous gaps in international
connectivity. These differences arise
from a number of scenarios:
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Evolution
gaps in signaling protocols being
used |
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Different
countries using different in-band
and out-of-band signaling protocol
variants |
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Differences
between SS7 ANSI and SS7 ITU-T variants |
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Capabilities
or limitations in individual switches |
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| THE
PROBLEM
Service
providers often face political, cultural,
and tariff challenges when extending
network reach across international borders.
No less difficult is the problem of
disparate network signaling protocols.
In addition to the legacy telephony
R2 protocol and its numerous variants,
there are also a multitude of ISDN and
SS7 variants present in world-wide networks.
For example, Brazil supports at least
six different R2 variants in its PSTN,
along with ISDN and its own variant
of SS7 ISUP. In Mexico, protocol support
includes country-specific R2 variants
and the NOM112 variant of SS7 ISUP in
its national network.
Furthermore, Telmex
has implemented additional features
on top of NOM112 that render it incompatible
with other Mexican service providers.
Telefonica's version of Spanish ISUP
is being deployed in national SS7 networks
in Spain, Peru, Chile, and Argentina.
These are only a few of the examples
of signaling challenges that international
carriers and service providers face
today. They must find a solution that
supports not only multiple signaling
variants, but that also is scalable
and flexible enough to ease inventory
management. |
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| THE
SOLUTION
  Encore
Networks' SignalPath™ 230 Signaling
Gateway enables the transparent translation
of one signaling protocol to another.
In fact, an SP230 Signaling
Gateway can allow multiple conversions
on a single platform. For carriers,
this means a seamless interface between
incompatible in-band and out-of-band
networks. This is especially beneficial
for international carriers who have
circuits between different countries.
Switch vendors also like what the
Signaling Gateway can do for them.
Placing a Signaling Gateway in a
network avoids the need for allocating
resources and capital to develop
the complex signaling protocols required.
The vendor only needs one set of
interfaces by using the Signaling
Gateway as the mediation device.
This approach is, in essence, a middleware
that unifies switch deployment by
enabling any combination of signaling
protocols.
More
and more telecom firms are choosing
the Encore Networks Signaling Gateway
to solve their signaling compatibility
problems. In fact, it is already
deployed commercially in over 80
countries as the signaling interoperability
solution between incompatible TDM-based
networks, as well as for connecting
TDM-based systems with next-generation
packet networks. Encore Networks
is helping CLECs, DLECs, and global
carriers think ahead to achieve timely
and successful roll-outs.
The
following are some of the applications
for the SP230 Signaling
Gateway: |
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SS7
to ISDN (T1 PRI) conversion |
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R2
to R2 (country to country) |
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In-band
R1 to ITU-T SS7 conversion |
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ANSI
to ITU-T conversion |
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ETSI
PRI to NI2 ISDN |
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ANSI
SS7 to ITU-T SS7 |
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Running
multiple conversions on single platform |
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Rate
conversion: µ-law T1 to A-law
E1 |
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 ENCORE
NETWORKS: THE SIGNALING EXPERTS
Encore
Networks' products address many
of the challenges facing next-generation
networks. A leader in SS7 signaling
interworking, Encore Networks
designs signaling solutions that
aim for an efficient delivery
of converged services. The advanced
Signaling Gateway accomplishes
this task by seamlessly binding
networks together.
Long-distance
carriers, international voice
and data bypass service providers,
ISPs, CLECs, and voice over packet
long distance service providers
all stand to benefit from the
Encore Networks Signaling Gateway.
Ask
our customers about the value
of our services. Our equipment
is deployed in over 80 countries
world-wide. Whether you operate
a circuit-switched or packet network,
and whether you operate in the
U.S. or abroad, Encore Networks
has the signaling solution for
you.
Find
out more. Give us a call us today
at (703) 318-7750, contact us
at info@encorenetworks.com,
or visit our web site at www.encorenetworks.com. |
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