Adax adds redundancy to its signaling gateway for high availability

October 20, 2004

2 Min Read

LONDON -- Adax has announced a significant new High Availability addition to its family of signalling gateway products. The Adax SG-HA has a fully redundant design with no single point of failure to provide a highly reliable SS7 – IP gateway solution. Designed to be implemented as a mated pair with a single point code the SG-HA performs like a traditional SS7 STP, relaying traffic rather than being an endpoint, while providing IP inter-working with SIGTRAN endpoints and SoftSwitches.

In addition to M3UA (MTP3 User Adaptation Part) both the Signaling Connection Control Part (SCCP) and the SUA (SCCP User Adaptation Layer) protocols have been added to the Adax SG-HA Gateway. SS7 SCCP provides connectionless 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 personal communications services (PCS). SCCP also provides the means by which an Adax SG can perform global title translation (GTT) to enable the destination signaling point and subsystem number (SSN) to be determined from the signaling message. SUA is a SIGTRAN protocol for transporting SCCP user part signalling messages (e.g. TCAP) over IP using SCTP. SUA is used between a signalling gateway and an IP signalling endpoint, or between IP signalling endpoints and supports unordered and in-sequence connectionless services, bi-directional connection-oriented services with or without flow control and detection of message loss and out-of-sequence errors. SUA operates with either connection-oriented or connectionless transport and is a signalling solution for companies who are running SCCP on SS7 devices that need to connect to IP devices.

“With the announcement of the SG-HA we have now added STP functionality to our range of Signalling Gateways” said Barry Zuckerman, President of Adax Inc. “This fully redundant, distributed solution that appears to the network as a single point code is a must for our high-end telecom customers.”

Adax Inc.

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