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M3UA Signaling Gateway (SG) Configuration , including M2PA and M2UA

M3UA interworking to end nodes

The AdaxGW Signaling Gateway (SG) configuration is a multi-protocol gateway that extends the SS7 network into the IP domain. By terminating SS7 circuits and routing SS7 application traffic (E.G. TCAP, ISUP and MAP) over M3UA/SCTP, traditional SS7 services such as call setup and teardown, and message transport and routing, can still be provided in the IP domain. The SG uses M3UA back-hauling to route MTP3 traffic over an IP network. The back-haul solution interworks circuit switched SS7 with SCTP/IP based SS7 through a point code within the ateway, and in this instance, there is only one point code for the combined gateway and application platform. This single point code enables IP functionality to be provided to the SS7 network without the need for any additional point codes.

M3UA Backhaul Protocol Stack

The SG can be configured as a Signaling End Point (SEP) 'front end' connecting to a 'back end' application platform (ASP) running M3UA. The M3UA layer on an IP-enabled device provides the equivalent set of primitives at its upper layer, as provided by the MTP3 to its local MTP3-Users on an SS7 device. The ISUP and/or SCCP layer on an IP-enabled device is unaware that the expected MTP3 services are offered remotely from an MTP3 Layer on a signaling gateway, and not by a local MTP3 layer. In effect, the M3UA extends access to the MTP3 layer services to a remote IP-based application.

M3UA Backhaul with SG configuration

M2PA to M3UA Interworking Protocol Stack

The SG can also be configured as a Signaling Transfer Point (STP), enabling multiple IP devices such as HLRs and MSCs running M2UA, M2PA and M3UA to be concentrated into a single gateway. This concentration reduces the number of point codes and simplifies the network management.

The interworking of M3UA with M2UA and M2PA are also configuration options with the SG. This configuration can be particularly useful for interconnecting IP nodes based on different SIGTRAN protocols and for gateway to gateway inter-communication over M2PA.