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Configuration Example - SG Plus
AdaxGW as a SCCP/GTT Signaling Gateway (SG Plus)
including M2PA, M2UA, M3UA and SUA
ISUP Query Transmission
via M3UA |
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TCAP Query Transmission
via
SUA |
In addition to M3UA (see SG configuration), the SG Plus supports
SCCP (Signaling Connection Control Part) and the SUA (SCCP User
Adaptation Layer) protocols. SS7 SCCP provides network services
above MTP3 and is used as the transport layer for TCAP-based services
such as freephone, calling card, local number portability, wireless
roaming and PCS (Personal Communications Services). SCCP also
provides the means by which an SG Plus can perform GTT (Global
Title Translation) to enable the destination signaling point and SSN
(Subsystem Number) to be determined from the signaling message.
The HA (High Availability) System option is a significant addition
to the
SR, SG and SG Plus configurations. The HA System configuration is
a fully redundant design with no single point of failure that provides
a
highly reliable SS7 – IP gateway solution. Designed to enable
two SR,
SG or SG Plus gateways to be implemented with a single point code,
the HA configuration can perform STP-like functions, or traditional
SS7
End-Point functions in a converged IP/SS7 network. At the same time,
the AdaxGWs continue to provide IP interworking with SIGTRAN
STPs, End Points, SoftSwitches and Media Gateways. With the
addition of SCCP/GTT, the SG Plus configuration provides more
STP-like functionality and, together with the HA option, offers the
fully
redundant, distributed solution that is a must for high-end telecom
companies.
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