SS7 – An Overview. Page 1. Contents. Signaling types Out of Band Signaling Common Channel Signaling SS7 Layers A IN Call flow using the SS7 Backbone. Signaling System 7 (SS7) is an architecture for performing out-of-band signaling in support of the call-establishment, billing, routing, and information-exchange. Example of SS7 protocol (ISUP) and related attacks. ▫ SS7 and IP: the SIGTRAN evolution and problems . Proprietary stacks (NSN, Alcatel, Huawei, ).

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A user interface may also be provided to SS7 platform manager for interactive access to broadband SS7 platform This is different from network topologies contemplated by other entities, such as Bellcore. The method, as set forth in claim 14, wherein the circuit based SS7 signaling data is in DS-0 signals. The ISDN user part is a protocol for circuit related messages and is used to set up and tear down all circuits used for data or voice calls in the public switched telephone network. A plurality of customer premises equipment 38 are coupled to service switching points Similarly, SS7 signaling link set 32 coupling mated pair signal transfer points 16 and 30 may become congested as queries between service control points 14 and alcateo are consumed by queries between regions or across network boundaries.

The signal transfer points are typically arranged in pairs to provide signaling redundancy for service switching points and for service control points in a typical SS7 network architecture. Year of fee payment: These new services are likely to drive current data links to full capacity alcatep introduce additional call set-up delays using the lower speed data links used in today’s network.

Hu e lamo, J. Method and system for mapping virtual connections to asymmetric digital subscriber line latency paths. Broadband SS7 platform provides narrowband signaling links by integrating message transfer part layer 3 with an message transfer part layer 2 and 1 and ultimately a physical link supporting V.

Data link and physical layer delivers the message transfer part layer 3 messages.

Alcatel Unleashed

A method for transporting signaling data over high speed data links, comprising the steps of: SS7 platform manager configures the system from configuration fileswhich are read upon start-up of broadband SS7 platform The alactel between the two layers consists of a set of primitives.


Message transfer part layer 3 relies on the services of data alxatel and physical layer for delivery of all messages.

Signal transfer points are coupled to network by optical alcatfl sets which may transport asynchronous transfer mode OC-3 or STM-1 format signals. Accordingly, a need has arisen for a solution to the congestion problem that may arise with the SS7 networks. Data structure embodied in a computer readable medium for communicating signaling system seven SS7 user part messages between SS7 nodes.

An SS7 link set may include up to sixteen signaling data links.

The signal transfer point performs the message transfer protocol MTP routing, management functions for the SS7 user layers and the SCCP signaling connection control part functions. Message transfer alcarel layer 3 also uses primitives to communicate with SS7 user partsi.

This invention is related in general to the field of telecommunications systems.

The high speed signaling network, as set forth in claim 1, wherein the plurality of advanced intelligent network nodes comprise a service control point. To support the SS7 signaling over an asynchronous transfer mode link the message transfer part layer 3 interfaces with a SAAL signaling asynchronous transfer mode adaptation layer Service control point 14 is a transaction based processing system whose primary responsibility is to respond to queries from service switching points 22 for data needed to complete routing a call.

Service control point may be coupled to network by an electrical facility DS-1 or E1 or an optical facility OC-3 or STM-1 link set using asynchronous transfer mode signaling to transport SS7.

Further, any link within a link set may be dynamically loaded with the total capacity of the facility bandwidth to any level of occupancy of the virtual channel so long aldatel the total facility bandwidth has not been exceeded by the total usage of all available ss7.

Computer program products, methods, and protocol for interworking services between a public telephone network, intelligent network, and internet protocol network. The high speed signaling network, as set forth in claim 1, wherein the plurality of advanced intelligent network nodes comprises a signal transfer point.


In this scheme, the broadband asynchronous transfer apcatel transport does not use point-to-point physical connections, but virtual circuits, whether they may be switched or permanent.

Service switching points 22 are part of the public switched telephone network and are coupled to the customer premises equipment CPE 28 of telephone service subscribers.

SS7 Signalling Protocol – Alcatel Unleashed

The narrowband signaling link configuration is provided through SS7 message transfer part layers 1 and 2. Public telephone network, intelligent network, and internet protocol network services interworking. Within the virtual path the facility is allocated into multiple virtual channels. Broadband ISDN user part process interfaces with message transfer part process with message transfer part service primitives instead of using the services of SCCP.

The virtual path connection is defined based on the interpretation of the higher layer SS7 message transfer protocol MTP-3 that includes a destination point code which identifies the physical location of the termination point of the signaling path.

One of the primary characteristics of broadband SS7 messages is the longer message size bytes versus bytes. System and method for transporting ss7 signalling over broadband asynchronous transfer mode links.

The method, as set forth in claim 14, wherein the circuit based SS7 signaling data is in electrical signals and the packet based asynchronous transfer mode packet data are in optical signals. Systems and method for transporting multiple protocol formats in a lightwave communication network. Intelligent broadband communication system and method employing fast-packet switches. The method, as set forth in claim 14, wherein the circuit based SS7 signaling data is in electrical signals and the packet based asynchronous transfer mode packets are in electrical signals.

User interface provides access to the control, statistics and status interfaces for SS7 user parts processesmessage transfer part layer 3 processand the broadband signaling link components.

System and method for transporting SS7 signaling over broadband asynchronous transfer mode links.