Android applications can use SIP protocol over GPRS data channels to enable encrypted voice communication between users. SIP allows for setting up voice calls and multimedia sessions between parties. The applications are written in Java and compiled to Dalvik bytecode to run optimally on Android's Linux operating system in a minimal memory footprint.
The Session Initiation Protocol (SIP) is the dominant signaling protocol used in VoIP today. It is
responsible for the establishment, control and termination of sessions by exchanging ASCII-text-based
messages between the endpoints. This post goes through the basic components of SIP: messages and
logical entities.
What is an SBC? A look at the role of the Session Border ControllerAlan Percy
IP communications systems are becoming an ever-more critical part of business and consumer communications. As a result, they are increasingly becoming the target for fraudsters, trolls and hackers, requiring a comprehensive security solution. These are the reasons behind the birth of the Session Border Controller. But there is much more to SBCs than security.
In this presentation, we get "back to basics" and show the threats and underlying role that an SBC plays in modern IP communications solutions. During this session, you'll learn about B2BUA, NAT, DOS/DDOS attacks, registration floods, topology hiding and more...
In the past few years, a number of things lead operators towards convergence. Mobile handsets and mobile application developers have advanced very fast in the last few years and support lot of new technologies which sometimes network doesn't. Also, all kinds of access devices are allowing people to access an IP centric voice infrastructure
The Session Initiation Protocol (SIP) is the dominant signaling protocol used in VoIP today. It is
responsible for the establishment, control and termination of sessions by exchanging ASCII-text-based
messages between the endpoints. This post goes through the basic components of SIP: messages and
logical entities.
What is an SBC? A look at the role of the Session Border ControllerAlan Percy
IP communications systems are becoming an ever-more critical part of business and consumer communications. As a result, they are increasingly becoming the target for fraudsters, trolls and hackers, requiring a comprehensive security solution. These are the reasons behind the birth of the Session Border Controller. But there is much more to SBCs than security.
In this presentation, we get "back to basics" and show the threats and underlying role that an SBC plays in modern IP communications solutions. During this session, you'll learn about B2BUA, NAT, DOS/DDOS attacks, registration floods, topology hiding and more...
In the past few years, a number of things lead operators towards convergence. Mobile handsets and mobile application developers have advanced very fast in the last few years and support lot of new technologies which sometimes network doesn't. Also, all kinds of access devices are allowing people to access an IP centric voice infrastructure
The Voice over Internet Protocol (VoIP). The VoIP is relatively new and is gaining more and more popularity as it offers a
wide range of features and is much more cost effective as compared to the traditional PSTN. But the VoIP brings with it certain
security threats which need to be resolved in order to make it a more reliable source of communication. Session Initiation Protocol
(SIP) today is considered the standard protocol for multimedia signaling, and the result is a very generic protocol. SIP is specified by
the IETF in RFC 3261. From a structural and functional perspective, SIP is application layer signaling text-based protocol used for
creating, modifying, and terminating multimedia communications sessions among Internet endpoints. Unfortunately, SIP-based
application services can suffer from various security threats as Denial of Service (DoS). attacks on a SIP based VoIP infrastructure that
can severely compromise its reliability. In contrast, little work is done to analyze the robustness and reliability of SIP severs under
DoS attacks. In this survey, we are discussing the DoS flooding attack on SIP server. Firstly, we present a brief overview about the SIP
protocol. Then, security attacks related to SIP protocol. After that, detection techniques of SIP flooding attack and various exploited
resources due to attack were discussed and finally the paper reviews previous work done on SIP based DoS attacks.
While an increasing number of operators have already replaced their SS7 based telecommunication core network with a SIP based solution, the interconnection to neighboring partners is still often realized over an SS7 peering point. This means that a call that is carried over a VoIP network is translated to an SS7 call and then possibly back to VoIP again. The translation requires specialized components and resources, which increases the network operation costs and introduces unnecessary processing delay. To avoid these costs and delays operators have started introducing SIP based interconnection and peering points.
The ABC SBC enables operators to establish secure borders to their neighbors by offering topology hiding, denial of service protection and mediation in a scalable manner
Over the last 12 months we’ve shared a lot of information about session border controllers, applications for SBCs, customer use cases, along with details on FreeSBC installation and configuration. During that time, also been asked dozens of questions and done our best to answer every single one of them live during the event or in writing on the TelcoBridges forum. With this milestone, we thought it was time to look back at the most popular and frequent questions. So join us as we review our “Top 10” FAQ.
A recording of the webinar can be found at: https://www2.telcobridges.com/FreeSBCVideoLibrary
Learn more at: www.freesbc.com
ALOE Transit SBC is a session border controller that combines security, media management, and transcoding services in a single, highly scalable software platform. The product can be easily deployed in complex network structures and features network topology hiding and distributed architecture, which makes the network less vulnerable to malicious attacks.
The multi-functional IP-PBX delivers high performance. Simplified management, reduced communication cost, seamless connectivity with remote users and between geographically dispersed branches, advanced communication means and enhanced productivity are apparent benefits. The system employs open-standard SIP protocol and is hence interoperable with SIP proxies, gateways and IP phones. Communication of small and mid-sized enterprises as well as geographically distributed offices, remote workers and contact centre is much simplified and enhanced with SAPEX.
Softswitch is a central device in a telecommunications network that connects telephone calls from one phone line to another, across a telecommunication network or the public Internet, entirely by means of software running on a general-purpose system.
This is a depiction on Legacy Telecom technologies and landscape. It describes the outdated approach in Telecom network and their new updates technology versions for IP based Telecom networks .
The Voice over Internet Protocol (VoIP). The VoIP is relatively new and is gaining more and more popularity as it offers a
wide range of features and is much more cost effective as compared to the traditional PSTN. But the VoIP brings with it certain
security threats which need to be resolved in order to make it a more reliable source of communication. Session Initiation Protocol
(SIP) today is considered the standard protocol for multimedia signaling, and the result is a very generic protocol. SIP is specified by
the IETF in RFC 3261. From a structural and functional perspective, SIP is application layer signaling text-based protocol used for
creating, modifying, and terminating multimedia communications sessions among Internet endpoints. Unfortunately, SIP-based
application services can suffer from various security threats as Denial of Service (DoS). attacks on a SIP based VoIP infrastructure that
can severely compromise its reliability. In contrast, little work is done to analyze the robustness and reliability of SIP severs under
DoS attacks. In this survey, we are discussing the DoS flooding attack on SIP server. Firstly, we present a brief overview about the SIP
protocol. Then, security attacks related to SIP protocol. After that, detection techniques of SIP flooding attack and various exploited
resources due to attack were discussed and finally the paper reviews previous work done on SIP based DoS attacks.
While an increasing number of operators have already replaced their SS7 based telecommunication core network with a SIP based solution, the interconnection to neighboring partners is still often realized over an SS7 peering point. This means that a call that is carried over a VoIP network is translated to an SS7 call and then possibly back to VoIP again. The translation requires specialized components and resources, which increases the network operation costs and introduces unnecessary processing delay. To avoid these costs and delays operators have started introducing SIP based interconnection and peering points.
The ABC SBC enables operators to establish secure borders to their neighbors by offering topology hiding, denial of service protection and mediation in a scalable manner
Over the last 12 months we’ve shared a lot of information about session border controllers, applications for SBCs, customer use cases, along with details on FreeSBC installation and configuration. During that time, also been asked dozens of questions and done our best to answer every single one of them live during the event or in writing on the TelcoBridges forum. With this milestone, we thought it was time to look back at the most popular and frequent questions. So join us as we review our “Top 10” FAQ.
A recording of the webinar can be found at: https://www2.telcobridges.com/FreeSBCVideoLibrary
Learn more at: www.freesbc.com
ALOE Transit SBC is a session border controller that combines security, media management, and transcoding services in a single, highly scalable software platform. The product can be easily deployed in complex network structures and features network topology hiding and distributed architecture, which makes the network less vulnerable to malicious attacks.
The multi-functional IP-PBX delivers high performance. Simplified management, reduced communication cost, seamless connectivity with remote users and between geographically dispersed branches, advanced communication means and enhanced productivity are apparent benefits. The system employs open-standard SIP protocol and is hence interoperable with SIP proxies, gateways and IP phones. Communication of small and mid-sized enterprises as well as geographically distributed offices, remote workers and contact centre is much simplified and enhanced with SAPEX.
Softswitch is a central device in a telecommunications network that connects telephone calls from one phone line to another, across a telecommunication network or the public Internet, entirely by means of software running on a general-purpose system.
This is a depiction on Legacy Telecom technologies and landscape. It describes the outdated approach in Telecom network and their new updates technology versions for IP based Telecom networks .
IoT Physical Servers and Cloud Offerings.pdfGVNSK Sravya
Introduction to Cloud Storage models
• Communication APIs
• Webserver-Web server for IoT
• Cloud for IoT
• Python web application framework
• Designing a RESTful web API.
Voice over Internet Protocol (Voice over IP, VoIP and IP telephony) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. The terms Internet telephony, broadband telephony, and broadband phone service specifically refer to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).The steps and principals involved in originating VoIP telephone calls are similar to traditional digital telephony and involve signaling, channel setup, digitization of the analog voice signals, and encoding.
Gartner Catalyst: How to succeed with your IT Mobile StrategyLou Sacco
A soup to nuts presentation I did at Gartner Catalyst on how we implemented a successful IT mobile strategy with technologies like Cordova, Meteor, Axway, AirWatch and more!
IBM Softlayer Bluemix Marketplace
API Economy
Infrastructure as a Service
Platform as a Service
Software as a Service
IaaS PaaS SaaS
Register for Bluemix at http://ibm.biz/BluemixSBSS
See Softlayer at http://ibm.biz/SBSlideShareSL
Join the Marketplace at http://ibm.biz/SBSlideShareMP
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
2. Android is part of the ‘build a
better phone’ process
Open Handset Alliance produces
Android
Open Handset Alliance produces
Android
Comprises handset manufacturers,
software firms, mobile operators, and
other manufactures and funding
companies
Comprises handset manufacturers,
software firms, mobile operators, and
other manufactures and funding
companies
3. Android applications are written
in Java
package com.google.android.helloactivity;
import android.app.Activity;
import android.os.Bundle;
public class HelloActivity extends Activity {
public HelloActivity() {
}
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.hello_activity);
}
}
4. Android applications are
compiled to Dalvik bytecode
Write app in JavaWrite app in Java
Compiled in JavaCompiled in Java
Transformed to Dalvik bytecodeTransformed to Dalvik bytecode
Linux OSLinux OS
Loaded into Dalvik VMLoaded into Dalvik VM
5. The Dalvik runtime is optimised
for mobile applications
Run multiple VMs efficientlyRun multiple VMs efficiently
Each app has its own VMEach app has its own VM
Minimal memory footprintMinimal memory footprint
7. Can assume that most have
android 4.0 or above
Bruce Scharlau, University of Aberdeen, 2010
http://developer.android.com/resources/dashboard/platform-versions.html
8. Introduction
SIP is
• An Application-layer control (signaling)
protocol for creating, modifying and
terminating sessions with one or more
participants.
• Sessions include Internet multimedia
conferences, Internet telephone calls and
multimedia distribution.
• Members in a session can communicate via
multicast or via a mesh of unicast relations, or
a combination of these.
• Text based , Model similar to HTTP : uses
client-server model
9. SIP Basic Functionality
Supports 5 facets of communication:
• User location: determination of the end
system to be used for communication;
• User capabilities: determination of the media
and media parameters to be used;
• User availability: determination of the
willingness of the called party to engage in
communications;
• Call setup: "ringing", establishment of call
parameters at both called and calling party;
• Call handling: including transfer and
termination of calls.
10. SIP Functionality (cont.)
• SIP can also initiate multi-party calls
using a multipoint control unit (MCU) or
fully-meshed interconnection instead of
multicast.
• Internet telephony gateways that
connect Public Switched Telephone
Network (PSTN) parties can also use
SIP to set up calls between them.
11. Development of SIP
• SIP developed by Handley, Schulzrinne,
Schooler, and Rosenberg
- Submitted as Internet-Draft 7/97
• Assigned RFC 2543 in 3/99
• Goals: Re-use of & Maximum Interoperability
with existing protocols
• Alternative to ITU’s H.323
- H.323 used for IP Telephony since 1994
- Problems: No new services, addressing,
features
- Concerns: scalability, extensibility
12. SIP Philosophy
• Internet Standard
- IETF - http://www.ietf.org
• Reuse Internet addressing (URLs, DNS,
proxies)
- Utilizes rich Internet feature set
• Reuse HTTP coding
- Text based
• Makes no assumptions about underlying
protocol:
- TCP, UDP, X.25, frame, ATM, etc.
- Support of multicast
13. SIP Architecture
• SIP uses client/server architecture
• Elements:
– SIP User Agents (SIP Phones)
– SIP Servers (Proxy or Redirect - used to
locate SIP users or to forward messages.)
• Can be stateless or stateful
– SIP Gateways:
• To PSTN for telephony interworking
• To H.323 for IP Telephony interworking
• Client - originates message
• Server - responds to or forwards message
14. SIP Entities
• User Agents
– User Agent Client (UAC): Initiates SIP requests
– User Agent Server (UAS): Returns SIP responses
• Network Servers (diff. types may be co-located )
– Proxy: Decides next hop and forwards request, relays call
signaling , operates in a transactional manner, saves no
session state
– Redirect: Sends address of next hop back to client,
redirects callers to other servers
- Registrar: Accepts REGISTER requests from clients,
maintains users’ whereabouts at a location server
18. Instant messaging based on
SIP
• SIMPLE – IM protocol based on SIP
• SIP promises interoperability between
various IM vendors
• “Forking proxy “
• SIP has unique user tracking features.
• SIP addressing
20. SIP for Internet Telephony
• Two types of phones – IP phones and
conventional analog phones.
• Uses phone numbers instead of IP
addresses
• To place a call to an IP phone, DNS is
used
• To place a call to an analog phone,
gateway
protocols like BGP are used
23. Conclusions
• Through this application, the users will be
able to communicate with each other
securely using GPRS
• We shall use strongest encryption
technique called ZRTP which would be
layered on SIP protocol for an effective