Chapter 1 Introduction
Terminology
•Message Transfer Part 2 (MTP2). Provides
•Message Transfer Part 3 (MTP3). Extends the functionality of MTP2 to provide network layer functionality with such capabilities as node addressing, routing, alternate routing, and congestion control.
•Network Interface Controller (NIC). A process within the ICM system that communicates directly with the carrier’s signaling network. The NIC reads call routing requests from the network and transfers them to the ICM’s Central Controller. Subsequently, the NIC passes a routing label from the Central Controller to the carrier signaling network.
•Point Code (PC). Numeric value that defines the unique ID of an element in an SS7 network
•Remote Point Code (RPC). Identifies the signaling point where all links in a linkset are directly connected.
•Signaling Connection Control Part (SCCP). SCCP provides two major functions:
–Addresses applications within a signaling point.
–Performs incremental routing using a capability called Global Title Translation (GTT), which frees originating signaling points from the burden of having to know every potential destination to which they might have to route a message.
•Service Control Point (SCP). Node (computer) in the carrier signaling network. ICM software functions as a SCP in networks where the SS7Cfg configuration tool is used.
•Signaling Link Code (SLC). Defines and numbers the links used in a linkset.
•Signaling System 7 (SS7). A standard network interface used by carriers to interconnect switches and some peripherals.
•Service Switching Point (SSP).
•Signal Transfer Point (STP). Routing and interconnection point for SS7 traffic.
•Transaction Capabilities Application Part (TCAP). Defines the messages and protocol used to communicate between applications (deployed as subsystems) in nodes.
Cisco ICM Enterprise Edition SS7 Gateway Configuration Tool User Guide Release 6.0(0)