pdf_gross.gifSS7 - Protocols & Operation and Services

[3-day course, Euro 3,450.- (net) per participant]

backtotop.gifIntroduction to the Signaling System No 7

Course Description

  • The SS7-Protocol Stack
    Origins of SS7, SS7 in the OSI-Reference Model, Overview of the SS7-Protocol Stack, Outband Signaling vs. Inband Signaling
  • The SS7-Network
    Tasks and Functions of SP’s (Signaling Points), SCP’s (Signaling Control Points) and STP’s (Signaling Transfer Points)
  • Use of SS7
    SS7 in Public Telephony, Mobile Communications and Intelligent Networking
  • Overview of the Related ITU-T Recommendations
    ITU-T Q-series, Q.700 – Q.704, Q.711 – Q-714, Q.721 – Q.725, Q.761 – Q.766, Q.771 – Q.773

backtotop.gifThe Message Transfer Part

  • Overview
    Tasks and Functions of MTP1, 2 and 3, The Signal Units
  • The FISU
    Frame Format and Parameters, Format and Function of BSN, BIB, FSN and FIB, Meaning of the LI = 0 in FISU's.
  • The LSSU
    Frame Format and Parameters, Status Codes SIO, SIN, SIE, SIOS, ….
  • The MSU
    Frame Format and Parameters, the SIO, differences between national and international messages (Network Indicator),
  • Overview of the Different User Parts
    Tasks and Functions of Signaling Network Management, Signaling Network Test and Maintenance, OMAP, SCCP, TUP and ISUP.
  • Routing in an SS7-Network
    The Routing Label (OPC, DPC, CIC and SLS), different notations of the Routing Label in ITU-T TUP, SCCP, ISUP and in ANSI / Bellcore (hex, 3-8-3, 4-3-4-3, …)
  • Example: Commissioning of an SS7-Link
    LSSU's, SLTM and SLTA message exchange
  • Example: The Use of BSN/BIB and FSN/FIB during MSU-transfer

backtotop.gifSS7 Network Management and Test

  • Overview
    Tasks and Functions of SNM and SNT
  • SNM and SNT Message Format
    Use of the SIF, Heading Codes H0 and H1, Message Formats of the different SNM and SNT-Messages
  • SNM and SNT Message Types
  • Typical Network Management Scenarios
    STP-Error (Consecutive Message Exchange), SS7-Link Error (Consecutive Message Exchange), SS7-Link Overload (Consecutive Message Exchange)

backtotop.gifThe Signaling Connection Control Part

  • Overview
    Tasks and Functions, Connection-less and connection-oriented classes, Embedding SCCP-messages into MSU's.
  • SCCP-Message Format and Message Types
    Pointer scheme, Message Types CR, CC, CREF, RLSD, RLC, DT1, DT2, …, Parameters in SCCP-messages (SLR, DLR, Protocol Class, Release Cause, Return Cause, SSN, …)
  • End-to-End Routing through the SCCP
    Subsystem Numbers, Called- and Calling Party Addresses, The Global Title, Global Title Translation
  • SCCP-Management
    Management Message Types and Functions (SSA, SSP, SST)
  • Example: Using SLR and DLR for Call Trace Functions

backtotop.gifThe ISDN User Part (ISUP)

  • Overview
    Tasks and Functions, Embedding ISUP-messages into MSU's, Capabilities supported by the ISDN User Part
  • ISUP-Message Format and Message Types
    Message Types IAM, ACM, ANM, REL, RLC, …, Parameters in ISUP-messages (CIC, Problem Code, Called Party Number, ...)
  • End-to-End Routing in ISUP
    Routing through the Pass-along Method or through SCCP, Details of using the Pass-along Method
  • Future Enhancements
    Outlook towards BICC
  • Example: End-to-End Call Setup through ISUP

backtotop.gifThe Transaction Capabilities Application Part (TCAP)

  • Overview
    Tasks and Functions, Protocol Stack, Users of TCAP, Transaction Layer and Component Layer
  • Introduction to ASN-1 BER
    TLV-Encodings , Primitives and Constructors, Encoding of Strings and Numbers
  • TCAP-Message Format and Message Types
    Message Types BEGIN, END, CONTINUE and ABORT, Dialogue Portion and Dialogue Units (Request, Response, Abort), Component Portion (Invoke, Return Result, Return Error, Reject)

backtotop.gifIntelligent Networking (IN) and Wireless IN (WIN)

  • Overview
    Driving Forces behind IN and WIN, Applications of IN and WIN, Network Architecture of IN, Tasks and Functions of (SCF, SDF, SSF, CCF, SRF, SCEF, SMF), Network Elements of CAMEL
  • INAP (Intelligent Networking Application Part)
    INAP-Formats, Procedures, Translation Example
  • IN Capability Sets
    CS-1, CS-2 and CS-3

backtotop.gifSIGTRAN or SS7 over IP / SCTP and M3UA

  • Overview
    Using IP in the SS7-Protocol Stack, Overview of SCTP and M3UA
  • The SCTP-Protocol
    Operation of SCTP, Relationship between SCTP and the IP-layer, Applying IPsec on SCTP
  • SCTP-Packet-Formats (Payload Data, INIT, INIT_ACK, …)
    Important Parameters (Cause Code, Heartbeat, Stream Identifiers, …)
  • The M3UA-Protocol
    M3UA on top of SCTP, Interworking between M3UA and the MTP-3-User (ISUP, SCCP)
  • M3UA-Message Classes and Types
    Management (MGMT) Messages, Transfer Messages, SS7 Signalling Network Management- (SSNM) and ASP State Maintenance- (ASPSM) Messages