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SS7 Network Fraud Warning

Nov 8, 2010 at 8:22 pm in SS7 by LT contributor · Leave a Comment »

cloudtech

SS7 Network Fraud: Storm Warning

Mobile phone networks face rising levels of fraud and network hacking. Various developments in the industry mean that it is now easier than ever for fraudsters to gain access to the network. Robin Burton argues that, unless operators implement on-line, real-time and automatic systems to identify and eliminate new and evolving forms of fraud and network attack, the consequences may be very serious.

Fraud and  [read more →]

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SS7 Glossary

Jul 30, 2010 at 12:09 am in SS7 by LT contributor · Leave a Comment »

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Terms
Description

ABS
Alternate Billing Service

ACD
Automatic Call Distributor

ACG
Automatic Code Gapping

ACK
Acknowledgment

ACM
Address Complete Message

AFR
Automatic Flexible Routing

AHT
Average Handle Time

AIN
Advanced Intelligent Network

AIOC
Automatic Identified Outward Calling

AMA
Automatic Message Accounting

AMATPS
AMA Teleprocessing System

AMP
AIN Maintenance Parameter

AMPS
Advanced Mobile Phone System

ANI
Automatic Number Identification

ANM
Answer Message

ANSI
American National Standards Institute

API
Application Programming Interface

APPN
Advanced Peer-to-Peer Networking

ARP
Address Resolution Protocol

ASA
Average Speed of Answer

ASCII
American Standard Code for Information Interexchange

ASE
Application Service Element

ASN.1
Abstract Syntax Notation 1

ATB
All Trunks Busy

ATM
Asynchronous Transfer Mode

ATP
Acceptance Test Procedure

AUI
Attachment Unit Interface

AW
Admin Workstation

B-ISDN
Broadband Integrated Services Digital Network (ISDN)

BAF
Bellcore  [read more →]

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ISUP RELEASE CAUSE

Jul 12, 2010 at 11:30 pm in SS7 by LT contributor · 1 Comment »

Release codes are usually used to identify and debug any events occurring in ISUP signaling. Every event in ISUP signaling generates a release code number. Even for a normal ISUP call a release code is generated

ISUP RELEASE CAUSE

S.No
Rel Cause Value
ITU-T Description

1
1
Unallocated (unassigned) number

2
3
No route to destination

3
5
Misdialled trunk prefix (national use)

4
16
Normal call clearing

5
17
User busy

6
18
No user responding

7
19
No answer from user (user  [read more →]

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Voice and Signaling Erlang Calculation

Jun 27, 2010 at 2:19 pm in SS7 by LT contributor · Leave a Comment »

Erlang

The objective of teletraffic theory can be formulated as follows:

“To make the traffic measurable in well de fined units through mathematical models and to derive the relationship between grade-of-service and system capacity in such a way that the theory becomes a tool by which investments can be planned.”

The goal when planning a telecommunication system is to adjust the amount of equipment so that variations in the subscriber demand for calls can be satis ed  [read more →]

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Basic SS7

Jun 17, 2010 at 12:10 am in SS7 by LT contributor · 1 Comment »

Why SS7?

Public Telephone Networks(PTNs) typically are composed of a signaling and transport network. The signaling network controls the setup and message transfer of cells, as well as advanced features such as calling card and toll-free service. The signaling network controls the voice and data circuts in transport network. The primary signaling protocol in use today is signaling systems 7(SS7), which interconnects networks such as SSP, SCP

The SS7 architecture comprises three signaling points: services switching points(SSPs), signal transfer Points (STPs)  [read more →]

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What is Signaling

Jun 16, 2010 at 12:04 am in SS7 by LT contributor · Leave a Comment »

In telephony, signaling is the exchange of information between involved points in the network that sets up, controls, and terminates each telephone call. In in-band signaling , the signaling is on the same channel as the telephone call. In out-of-band signaling , signaling is on separate channels dedicated for the purpose.