IMG 1010 - Overview of Sigtran M3UA
M3UA on IMG: IMG used is AS Mode (Application Server)
The diagram below demonstrates the IMG 1010 used as an Application Server (AS). Using the IMG 1010 as an Application Server will enable the use of the IMG 1010 in a Next Generation SS7 interconnect utilizing IP for SS7 signaling as an alternative to MTP2 based signaling links. The diagram displays the use of the IMG 1010 as a replacement for conventional MTP2 signaling links. The IMG 1010 utilizes the IP network to pass ISUP signaling over the St-links. The CIC's in the Diagram are controlled by these St-links. This is one of the ways in which the IMG 1010 can be used as an Application Server. Below is a procedure which explains how to configure the IMG 1010 as an Application Server which will communicate with an External Signaling Gateway such as the Dialogic® DSI Signaling Gateway.
Each stack configured as an Application Server will support communicating with up to (16) Remote Signaling Gateway Stacks.
The IMG 1010 can be configured in a standalone or redundant configuration.
An SS7 stack configured as an Application Server does not support being configured as a Signaling Gateway Stack as well.
A stack configured as an Application Server does not support configuring conventional SS7 links etc on that same stack.
The M3UA Application Server is license supports up to four stacks. One M3UA license will support creating one, two, three, or four stacks configured for M3UA signaling.
St-links are licensed in two link increments. St-links licenses range from 2 links up to 64 links on a non-redundant "Standalone" system. The max doubles to 128 St-links if in a redundant system. In this case there would be 64 links per IMG 1010.
In the diagram above the External Signaling Gateway cannot be an IMG 1010. In this example the IMG 1010 does not support SCCP traffic.
Sharing M3UA-ASP's by one SS7 signaling stack is NOT supported. (ASP Multiplexing)
M3UA ASP does NOT support broadcast traffic.
The IMG 1010 Application Stack supports DPC routing to its Remote Signaling Gateways.
The IMG 1010 Application Stack does NOT support optional routing key management messages. Routing to AS will use routing context values for routing.
M3UA on IMG: IMG used in SG Mode (Signaling Gateway):
The diagram below demonstrates the IMG 1010 used as a Signaling Gateway (SG) and is part of an entry level Signaling Switching Point implementation. The diagram displays a conventional SS7 network sending traditional MTP3 traffic to the IMG 1010 acting as a Signaling Gateway. The IMG 1010 provides the Nodal Interworking Function/Routing Layer that allows SCCP signaling to be inter-worked into the M3UA/IP Network. There are limitations when configuring the IMG 1010 as a Signaling Gateway. See items below for information on functionality and limitations.
A maximum for (4) M3UA application servers can be connected to the IMG 1010 configured as a Signaling Gateway.
Any application servers connected to the IMG 1010 Signaling Gateway in the configuration above must support SCCP traffic.
The IMG 1010 configured as an Application Server as depicted in the diagram above is not supported. In the scenario above, the IMG 1010 does not support ISUP traffic. IMG 1010 SG only supports SCCP traffic between MTP and M3UA networks, SCCP traffic between AS’s are not allowed
The Nodal Interworking Function will permit SCCP user part with Subsystem routing to and from the Application Server.
The M3UA Application Server is license supports up to four stacks. One M3UA license will support creating one, two, three, or four stacks configured for M3UA signaling.
The IMG 1010 node configured as a SG will share a common point code with a set of M3UA-based application servers.
IMG 1010 configured as a Signaling Server can support up to 64 St-links on a standalone system and 128 St-links on a Redundant System.
Sharing M3UA-SGP's by one SS7 signaling stack is supported. (SGP Multiplexing)
The IMG 1010 configured as a SG does not support optional routing key management messages. Receipt of these messages shall return appropriate network error response indicating routing key procedures are not supported.
The IMG 1010 can be configured in a standalone or redundant configuration.
Related Topics:
IMG 1010 - Configure IMG as AS Server
IMG 1010 - M3UA Remote Application Server (AS)
IMG 1010 - M3UA Remote Application Server (AS) Bind
IMG 1010 - M3UA Subsystem Number AS Route
IMG 1010 - M3UA SCCP AS Designates
IMG 1010 - Configure IMG as SG Server
IMG 1010 - M3UA Remote Signaling Gateway (SG)