SS7 Training In-depth

SS7 Training In-depth

Course Delivery

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Course Overview:

SS7 Training | Signaling System #7 Training In Depth Course description

In this SS7 Training In-depth course, you will learn the history of signaling and the progression of the technology through both in-band signaling and out-of-band signaling protocols. You will learn the key differences between the SS7 ITU-T and ANSI standards, connection and connectionless signaling services, and how SS7 supports cellular services such as subscriber roaming and packet-switched data services. Covered in depth are the complex level 4 protocols, newer and more advanced services such as Advanced Intelligent Network (AIN), and Transaction Capabilities Applications Part (TCAP) message structures and architecture. A typical SS7 Training | Signaling System #7 Training In Depth course is four days long but can be shortened to three or expanded to five depending on the level of depth required.

Signaling System No. 7 (SS7), known as C7 outside North America, is a packet-based out-of-band signaling system that is used to implement circuit-switched telecommunications networks and supports both fixed-line and cellular networks. In recent years, additional SS7 functionality has been introduced to meet the needs of expanding telecom services.

Customize It:

● If you are familiar with some aspects of this SS7 Training In-depth course, we can omit or shorten their discussion.
● We can adjust the emphasis placed on the various topics or build the SS7 Training course around the mix of technologies of interest to you (including technologies other than those included in this outline).
● If your background is nontechnical, we can exclude the more technical topics, include the topics that may be of special interest to you (e.g., as a manager or policy-maker), and present the SS7 Training In-depth course in manner understandable to lay audiences.

Related Courses:

ISUP and LNP Training
SS7 Training Overview | Signaling System #7 Training

What You Will Learn:

Upon completing this SS7 Training In-depth course, learners will be able to meet these objectives:

• Troubleshoot SS7 network problems.
• Monitor and evaluate SS7 network performance.
• Plan the integration and testing of new SS7 applications. Design new mobile network applications and services.

SS7 Training In-depth – Course Syllabus:

SS7 Training In-depth – Signaling Overview

What is Signaling?Network Signaling Evolution
In-Band Signaling
Out-of-Band Signaling

SS7 Training In-depth – Switching

Numbering Plans
Digit Analysis
Access T1/E1s
Pulse Code Modulation (PCM) Digital Voice
ISDN OverviewISDN Basic Rate Interface (BRI)
ISDN Primary Rate Interface (PRI)
Common Channel Signaling (CCS)
Channel Associated Signaling (CAS)

SS7 Training In-depth – Network Signaling Evolution

The North American Signaling Architecture
Signaling System No 7Pertinent Standards Organizations
SS7 Network Architecture
Telephone Set
Analog Telephone
Digital Telephone
Signaling
In-Band
Pulses or Audible Tones (DTMF) in Same Channel as Voice
Ripe for Toll Fraud
Digital Telephone – Signaling
ISDN/Out-of-Band
Private Branch Exchange (PBX)
Voice Coding
Pulse Code Modulation (PCM)
Uses 64K / Single Channel
a-Law Encoding (Europe)
mu-Law Encoding (North America
Adaptive Differential PCM (ADPCM)
Voice Band Data (VBD)
High Speed Modems
FAX
VBD Detect in DSP Chip
Private Branch Exchange (PBX)
Switching
Numbering Plans
Digit Analysis
Fast Busy before Number Completed
Analyzes Digits as they are Keyed
Options
Premise
PSTN
VPN
Private Network (Satellite, T1, VoIP, etc.)

History of Telecommunications Signaling

Private Branch Exchange (PBX)
Switching
Call Handling
Routing
Remote or Local Busy
Call Logging
Cost Allocation
Internal Billing
Billing Verification
900/976 Toll Blocking
CENTREX
Connection to Telco
Physical Connections
Tie Lines
Physical Connections
Access T1/E1s
T1 PBX Interface Voice Applications
Pulse Code Modulation (PCM) Digital Voice
64K Digital Voice
Mu-Law Encoded
ISDN Primary Rate Interface (PRI)
T1 Options for Voice/PBX
Line Coding
Framing
Super Frame (SF)
Extended Super Frame (ESF)
Bipolar N-zero Substitution (B8ZS)
Channelization
Channelized (Typical for PBX) vs
Non-Channelized (Typical for Router)

SS7 Training In-depth – Clocking

Network
PBX
Loop-Timing

E1 PBX Interfaces

E1 PBX Interface Voice Applications
Pulse Code Modulation (PCM) Digital Voice
64K Digital Voice
a-Law encoded
ISDN Primary Rate Interface (PRI): 30B+D
E1 PBX Interfaces
E1 PBX Interface Data Applications
Voice Band Data (VBD)
Modem
FAX
nx64K Data
E1 PBX Interfaces
E1 Options for Voice/PBX
Signaling
Common Channel Signaling (CCS)
Channel Associated Signaling (CAS)
Line Coding – High Density Bipolar 3 (HDB3)

SS7 Training – E1 PBX Interfaces

Channelization
Channelized (Typical for PBX) vs
Non-Channelized (Typical for Router)
Clocking
Network
PBX
Loop-Timing

BRI PBX Interfaces

ISDN Basic Rate Interface Applications:
Two Voice Lines for Home/Small Business/Branch Office
Two Voice Lines + Data Line for Home/Small Business/Branch Office
Dynamic Voice/Data for Home/Small Business/Branch Office
BRI PBX Interfaces
ISDN BRI Applications (continued) :
Data Only/64K (1B+D) LAN Interconnect or Internet/Intranet/Extranet
Data Only/128K (2B+D) LAN Interconnect or Internet/Intranet/Extranet
Data Only/16K (D Channel Only) Point-Of-Sale (POS) or Teller Machine
Switched Back-Up to T1/E1
BRI PBX Interfaces
Integrated Voice, Data and Video
Out of Band Signaling
Many Standard Hardware and Software Products
Offered/Tariffed by Almost All Carriers and Postal, Telephone and Telegraph Authorities (PTTs)
BRI PBX Interfaces
National/Local/Manufacturer “Flavors” and Variations

Analog/Analogue Interfaces:

Usually Found in “Legacy” Installations
Usually Preserved to Maintain Costs
NOT Common in New Installations
More Common at Small / Branch Locations
Analog/Analogue Interfaces May be Kept to Maintain Unique Features Not Present in Digital Systems:
Central Office/PBX Provided Dial Tone
Feature Buttons/Status Indicators Based upon Analog/Analogue System

Connection to Telco

Punch-Downs, Demarks and CSU/DSUs
Background
Connection to Telco
Inside the Central Office (CO)
Subsidiary Distribution Frames (SDFs) and Main Distribution Frames (MDFs)

Inside the Central Office (CO)

Digital Cross-Connect Systems (DCS/DACS)
Types
M0/1
M0/3
M1/3
Digital Cross-Connect Systems (DCS/DACS)
Signaling
In-Band
SS7/Out-of-Band
Switches
Intra-Network/Inter-Network Connections
Physical Connections
Fiber Optic Terminating System (FOTS)
Wave Division Multiplexing (WDM)/Photonic Layer
SS7
AIN
Other Devices and SystemsChannel Bank
Split-T CSU/DSU
Automatic Call Director (ACD)
Time Division Multiplexer (TDM)
Virtual Private Network (VPN)

SS7 Architecture

Service Switching Points (SSPs)
Signal Transfer Points (STP)
Service Control Points (SCPs)
Intelligent Peripherals (IPs)
Service Creation Environment (SCE)
Section Summary
SS7 Signal Data Links

SS7 Signal Data Links

Signaling LinksA (Access) Links
B (Bridge) Links
C (Cross) Links
D (Diagonal) Links
E (Extended) Links
F (Fully Associated) Links

SS7 Applications

Network Signaling Evolution
What Goes Over the Signaling LinkBasic Call Setup, Management, and Tear down
Wireless Services
Personal Communications Services (PCS)
Wireless Roaming
Mobile Subscriber Authentication
Local Number Portability (LNP)
Toll-free (800/888/866)
Toll (900) Services
Enhanced Call Features
Call Forwarding
Calling Party Name/Number Display
Three-way/Multi-way Conferencing
Addressing in the SS7 Network
OSS Interconnection: E911/911, LIDB, OS/DA

SS7 Levels / Layers

Physical Layer
Levels of the SS7 ProtocolNetwork Service Part (NSP)
Message Transfer Part Level 1 (MTP-1)
Message Transfer Part Level 2 (MTP-2)
Message Transfer Part Level 3 (MTP-3)
Signaling Connection Control Part (SCCP)
SCCP Routing Control (SCRC)
SCCP Management (SCMG)
User Parts
Telephony User Part (TUP)
ISDN User Part
Intelligent Network Application Part (INAP)
Network Service Part In-Depth
Message Transfer Part Level 1 (MTP-1)Physical Level/Layer
Physical Level Considerations

Message Transfer Part Level 2 (MTP-2)

Delimitation of Signal Units (L2 frames)
Alignment of Signal Units
Signaling Link Error Detection
Signaling Link Error Correction by Retransmission
Signaling Link Initial Alignment
Error Monitoring and Reporting
Link Flow Control

MTP-2 Header Fields

Fill-In Signaling Units (FISU)
Link Status Signal Units
LSSU Use of Timers
Zero Bit Insertion and Deletion
Signal Unit Alignment
Error Detection
Error Correction
Basic Error Correction (BEC)
Terrestrial Links
Signaling Link Initial Alignment
Signaling Unit Error Rate Monitoring (SUERM)
Processor Outage
Flow Control

Message Transfer Part Level 3 (MTP-3)MTP-3 Header

Signaling Connection Control Part (SCCP)
SSCP Protocol Classes of Service
SSCP Protocol Classes of Service
Routing Label
Message Type Code
Message Type Code: Connection Request
Message Type Code: Connection Confirmation
Message Type Code: Connection Refused
Message Type Code: Connection Released (RLSD)
Message Type Code: Connection Release Complete (RLC)
SCCP Routing Control (SCRC)
Routing vs Switching?
SCRC Addressing
Point Code Routing
Subsystem Number (SSN) Routing
Global Title (GT) Routing
Global Title (GT) Translation
Global Title (GT) Translation on GSM Network
Calling Party Address (CgPA) and Called Party Address (CdPA)
CgPA and CdPA Common Fields
Routing Parameters and Values Example
SCCP Management (SCMG)

Telephony User Part (TUP) In Depth

TUP Header
TUP Message TypesInitial Address
Initial Address With Additional Information
Subsequent Address
Subsequent Address With One Signal
General Forward Setup Information
Continuity Signal
Continuity Failure Signal
General Request
Address Complete
Charging
Switching Equipment Congestion Signal
Circuit Group Congestion Signal
National Network Congestion Signal
Address Incomplete signal
Call Failure Signal
Subscriber Busy Signal (electrical)
Unallocated Number Signal
Line Out Of Service Signal
Send Special Information Tone Signal
Access Barred Signal
Digital Path Not Provided Signal
Misdialed Trunk Prefix
Extended Unsuccessful Backward Setup Information
Answer Signal, Unqualified
Answer Signal, Charge
Answer Signal, No Charge
Clear Back Signal
Clear Forward Signal
Reanswer Signal
Forward Transfer Signal
Calling Party Clear Signal
Release Guard Signal
Blocking Signal
Blocking Acknowledgement Signal
Unblocking Signal
Unblocking Acknowledgement Signal
Continuity Check Request Signal
Reset Circuit Signal
Maintenance Oriented Group Blocking
Maintenance Oriented Group Blocking Acknowledgement
Maintenance Oriented Group Unblocking
Maintenance Oriented Group Unblocking Acknowledgement
Hardware Failure Oriented Group Blocking
Hardware Failure Oriented Group Blocking Acknowledgement
Hardware Failure Oriented Group Unblocking
Hardware Failure Oriented Group Unblocking Acknowledgement
Circuit Group Reset
Circuit Group Reset Acknowledgement
Software Generated Group Blocking
Software Generated Group Blocking Acknowledgement
Software Generated Group Unblocking
Software Generated Group Unblocking Acknowledgement
Automatic Congestion Control Information
Metering Pulse Message
Operator Signal
Subscriber Local – Busy Signal
Subscriber Toll – Busy Signal
Malicious Call Tracing Signal

ISDN User Part In Depth

ISUP ServicesCall Processing
Supplementary Services
Maintenance Functions
Bearers and Signaling
ISUP and the SS7 Protocol Stack
ISUP Message FlowMessage Timers
Circuit Identification Codes
Enbloc and Overlap Address Signaling
Circuit Glare
Continuity Test
Circuit Suspend and Resume
ISUP and Local Number Portability
ISUP–ISUP Tandem Calls

Interworking with ISDN

Supplementary Services
Additional Call Processing Messages
Maintenance Messages and Procedures
Signaling Mode Related to ISUP Trunks
Call Timers for Basic Call Example
Message TimersT7 Awaiting Address Complete Timer
T8 Awaiting Continuity Timer
T9 Awaiting Answer Timer
T1 Release Complete Timer
T5 Initial Release Complete Timer

CIC Identifies Specific Circuit

DPC:CIC Is Unique Circuit Identifier
Enbloc Signaling
Overlap Signaling
Circuit Glare (Dual Seizure)
Continuity Test (COT)
ISUP Message Format
Initial (IAM) Message Format
Subsequent Address Message (SAM–ITU Networks Only)
Continuity Message (COT)
Address Complete Message (ACM)
Answer Message (ANM)
Release Message (REL)/Releace Complete (RELC)
Simple ISUP Message Flow
ISUP Suspend/Resume
ISUP-ISUP Tandem Calls
ISUP-ISDN Interworking
Supplementary Services
Calling Line Identification (CLI)
Call Forwarding
Maintenance Messages and Procedures
Circuit Ranges
Circuit States
Circuit Validation
Continuity
Blocking and Unblocking Circuits
Circuit Reset

Transaction Capabilities Application Part In-Depth

Components of a Standard Interface
Message/Packet TypesANSI Packet Types
ITU Packet Types
Example ANSI/ITU Message Flows
TCAP Transaction Identifiers
ITU Transaction Sequence
ANSI Transaction Sequence
TCAP Message Structure
Components of a Standard Interface
Unidirectional Message Fields
Begin Message Fields
End Message Fields
Continue Message Fields
Abort Message Fields

Operations and Management Application Part (OMAP) in Depth

Identify
Control
Configure
Manage
Message Examples and Sequences

Intelligent Network Application Part (INAP) In Depth

IN Conceptual PlanesService Plane (SP):
Global Functional Plane (GFP)
Distributed Functional Plane (DFP)
Physical Plane (PP)

INAP ServicesSingle Number Service

Personal Access Service
Disaster Recovery Service
Do Not Disturb Service
Call Forward Service
Virtual Private Network Short Digit Extension Dialing Service

SS7 in the Wireless Network

GSM Phase 1
GSM Phase 2
GSM Phase 2+
GSM Network ArchitectureGSM Interfaces and Protocols Pertinent to SS7
Protocols Operating at Each Interface
Protocols Required for Functional Entities
MAP-n Protocols
SSNs used by Mobile Application Part (MAP)
Sample GSM GSM Call Flows
Sample GSM Wireline Call Flows

Equipment and Architecture

Mobile Switching Center (MSC)
Service Switching Points (SSP)
SS7 Connectivity Software
Signaling Transfer Points (STP)
Service Control Points (SCP)/Adjunct Processors (AP)
Intelligent Peripherals (IP)/Service Nodes (SN)
Home Location Registers (HLR)/Visitor Location Registers (VLR)
Short Message Service Centers (SMSC)
Voice over IP (VoIP) Gateways

Course Summary

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