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Extension of GCF Certification to TD-LTE mobile devices

Jul 11, 2011 at 5:36 am in News by support · Leave a Comment »

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Taken from the GCF Press Release, that announced that 400 different 3GPP compliant mobile phones, wireless modems and connected devices from more than 35 manufacturers achieved GCF certification in 2010…

The Global Certification Forum (GCF) announced the extension of GCF Certification to TD-LTE mobile devices that operate in the 2570-2620 MHz band.

Designated E-UTRA Band 38 by 3GPP, the 2570-2620 MHz band has been allocated for TD-LTE in a number of important markets, most notably China.

The addition of this first TD-LTE  [read more →]

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by Imthiyaz Ali

BEAM DIVISION MULTIPLE ACCESS (BDMA) FOR 5G

Apr 4, 2011 at 12:19 am in 5G by Imthiyaz Ali · 5 Comments »

The goal of mobile communication systems is to provide improved and flexible services to a larger number of mobile users at lower costs. This objective results in a big challenge for the wireless technology that is increasing system capacity and quality within the limited available frequency spectrum. The challenge in mobile communication system is to communicate using limited frequency and time. In order to achieve this target multiple access technique is required. There are Frequency Division Multiple Access  [read more →]

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by Edgar Martinez

Standards, Services and Patents

Feb 16, 2011 at 11:22 pm in Telephony by Edgar Martinez · Leave a Comment »

Standards

Standards contribute to a harmonized market for telecommunications networks and services. Not all network operators embrace these benefits like the old BELL system but, standards are here anyway and in some cases forced by law:

Benefits

The manufacturer; he can sell the same equipment to many customers, including network operators and consumers in many countries. He has one set of technical requirements which are recognized by authorities in many countries.

  1. The network operator, who can build equipment built by a number of different  [read more →]
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by Shri

Basic SS7 Quiz Part-2 | Test your SS7 Skill here

Nov 28, 2010 at 11:10 pm in Quiz by Shri · Leave a Comment »

[QUIZZIN 5]

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by LT contributor

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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by karthik

International Mobile Subscriber Identity (IMSI)

Oct 24, 2010 at 12:23 pm in GSM by karthik · 1 Comment »

International Mobile Subscriber Identity (IMSI)

       The subscriber is identified by an identity number called the International Mobile Subscriber Identity (IMSI).This number identifies the MS(Mobile Station) subscriber.

The International Mobile Subscriber Identity(IMSI) is embodied in the SIM of the mobile equipment. It is provided by the MS anytime it accesses the network.It is only transmitted over the air during initialization.

Since the air interface is vulnerable to fraudulent access, it is necessary to determine if  [read more →]

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by LT contributor

Basics of Steering of Roaming

Oct 18, 2010 at 10:21 pm in GSM by LT contributor · 3 Comments »

Steering-of-Roaming

Why SoR Required?

Roaming contributes a substantial portion of a mobile operator’s revenue. Typically, a home network has very little control over the selection of networks for out-roamers. Many out-roamers continue to register on visited networks which are not preferred by HPLMN, making it difficult to control roaming costs and ensure quality of service.

A picture will speak 1000 words; I hope you understood the problem.

So, HPLMN required some sort of legal and technical solution which solves their problem and providing  [read more →]

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by LT contributor

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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by LT contributor

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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by LT contributor

Basic SS7

Jun 17, 2010 at 12:10 am in SS7 by LT contributor · 2 Comments »

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 →]