Asterisk Open Source solution for IPBAX….

                 Asterisk is and has been Open Source under GNU GPL . Asterisk can use both traditional TDM technology and packet voice (Voice over IP and Voice over Frame Relay) protocols. Calls switched on TDM interfaces provide lag-less TDM call quality, while retaining interoperability with VoIP packetized protocols.

            Asterisk acts as a full featured PBX, supporting virtually all conventional call
features on station interfaces, such as Caller*ID, Call Waiting,Caller*ID on Call Waiting, Call Forward/Busy, Call Forward/No Answer, Call Forward Variable, Stutter Dial tone, Three-way Calling, Supervised Transfer, Unsupervised Transfer, ADSI enhancements, Voicemail, Meet-me Conferencing, Least Cost Routing, VoIP gatewaying,Call Detail Records, etc.

                At the same time, Asterisk provides full IVR capability, programmable at several layers, from a low-level C interface, to high level AGI scripting (analogous to CGI) and extension logic interfaces. Asterisk IVR applications run seamlessly from one interface to another, and need not know anything about the physical interface, protocol, or codec of the call they are working with, since Asterisk provides total abstraction for all those concepts.


Why different Media codec use in Analog signal to Digital Signal conversion…….

                 Every media codec uses data bandwidth for conversion of Analog Signal to Digital conversion due to his complexity of corresponding program. Different codec utilization depend up the scenario in each application which one is use ….

        I have provide the some codec list along with data bandwidth utilize…. 

G.711           64 kbps No
G.726           16, 24, or 32 kbps No
G.723.          1 5.3 or 6.3 kbps Yes (no for passthrough)
G.729           A 8 kbps Yes (no for passthrough)
GSM             13 kbps No
ILBC             13.3 kbps (30-ms frames) or 15.2 kbps (20-                   ms frames)            

Audio AudioCodes MediaPack 124 FXS (MP124 FXS):Code MP 124

      The MediaPack Series Analog VoIP Gateways are cost-effective, cutting edge technology products. These stand-alone VoIP Gateways provide superior voice technology for connecting legacy telephones, fax machines and PBX systems with IP-based telephony networks, as well as for integration with new IP-based PBX architecture. These products are designed and tested to be fully interoperable with leading soft-switches, H.323 gatekeepers and SIP servers.

               The MediaPacks are well-suited for commercial VoIP deployment. Field-proven voice and fax technology and feature-rich design makes the MediaPacks an excellent solution for various emerging VoIP applications. The MediaPacks are used in VoIP-based PBX or IP-PBX architecture as a mediation gateway and remote analog extension. It is also used for optimizing voice transmission over satellite links, pay phone networks, centralized IVR and Quality Monitoring applications. The MediaPacks are routinely deployed in Multi Tenant Units (MTU), broadband access networks and IP Centrex services


MediaPack 124 analog VoIP gateway, 24 FXS
including 24 FXS analog lines, single 10/100 BaseT, AC power supply, G.711/723.1/726/727/729AB Vocoders


he MediaPack™ Analog Media Gateway product family is based on AudioCodes’ field-proven and best-of-breed VoIP technology. Featuring 24 analog ports, the gateways connect analog terminals, PBXs or key systems to the IP network using FXS connectivity. Available in multiple protocols including SIP, H.323, MGCP and MEGACO, the Analog Media Gateways enable flexible deployment and interoperability for the evolving next generation networks. Using AudioCodes’ Analog Media Gateways, Network Equipment Providers and System Integrators can effectively deliver carrier-hosted converged services as well as enterprise-based applications.

24" x 18" x 6"

How to create a small scale computer network in your office…….

           Really its seem to be very difficult task how to create a small scale  computer network in your office specially when you are beginner

   Don’t worry I will help u…..

        Lets start….. basically networking of computer is divided in two category

           one is workgroup another one is domain. I would you suggest that you  develop domain architecture rather than workgroup since its more latest and manageable architecture. 

     For creation of domain in your network you need a Window 2000 Server ,Window 2003 Standard Edition Compact Disk with a Desktop PC which have at least 512 MB RAM,40GB 7200 rpm Hard Drive with Pentium 4 with 2.4 GHz. Processor ,CD ROM* 

             Install the server operating system as normal window install with the help of CD Drive.After successfully installation of server operating system on your PC. you type DC Promo command in the RUN command it will open the  Active Directory Installation wizard.It will create the Domain Controller in your computer Network steps are below mention

     1. Ask creation of domain in New forest.

     2.Ask about the New domain Name (e.g.

     3.NetBIOS Domain Name left same.

     4.Ask about where database and log folders wants to place.

     Microsoft preferred for best performance and recoverability  to store the database and logs on different hard disks.

     5.Ask about the where Store the Shared System Volume folder

SYSVOL folder must be store in NTFS volume.

        The purpose of SYSVOL folder is that it keep the server’s copy the domain’s  of public files.The content of SYSVOL folder is replicate to all the domain controller in the domain.

    6.DNS Registration and Diagnosis Page it Will search for any DNS present in the domain.If it not fond any DNS the it will show failure of DNS Present in the network.Then it will give the option to Install and configure the DNS server on this computer, set this computer to use this DNS server as its preferred DNS server.

    7.Ask about the Permission , left it as default.

    8.Ask about the Directory Service Restore Mode Administrator Password.

    9.It will finally show summary page on this page click on next.

     lets see what happen after the 9th step some processing will happen on your PC. After the processing Domain will be created on your PC with the name csc. Restart the PC and enjoy the Domain in the your computer network

    After the creation of domain login on your PC as  Administrator User id and Password domain as csc.After login give the ip address of some series like subnet mask may left gateway blank till your network is not communicate with the other network.

    after that you run the dsa.msc command in the run command.It will open the active directory users and computers console.Here you can create the users accounts . Now it means you have create the users account in the Domain.

     Now make the workstation with operating system as window XP Professional or window 2000 Professional as client.After the installation of workstation on any desktop PC in your network.Login as local PC administrator on that PC after login give the ip address address, as subnet mask left gateway blank with the same reason as i already discuss. Also make the entry of Preferred DNS as ip address of Server IP since DNS has been created on the Server.Now your PC work as  workstation  in workgroup.Now Join the this PC in Domain (CSC) by the option on Desktop

My computer ->Right Click ->Properties -> computer Name -> Change –>   

          click on radio button Domain Then type the domain name here (CSC).After some processing a welcome to csc domain screen will display then PC will restart. After the PC restart you may login by any user account that you created on Server with the domain choose csc in domain. Do same process for remain PCs in your network with different Ip address. And Enjoy the all PC’s in the domain .

* Specification that wrote does not i say its standard.I only wrote since these are available in market at normal pries.

My Sweet Bike

Hi friends ,

When my job passes more than 2 years. Then I decide to bye a bike on my myself hard earn money. But at that time I had a lot confusion which bike, in which brand , which capacity even at that I had only littlie bit of experience with 100 cc Hero Honda Don that bike owner is my elder brother that I rarely drive. At that time a was not have plentiful experience abut the bike. Then discussed with my friends, colleague but most of the people suggest me to bye a 100 cc Bike Hero Honda splendor. During this period I drive bike of my student Sudhir that was my MCA student. I feel better performance control and pick up but at that time do not know any technical specification. Then I make mind to purchase the Pulsar 150 .For this topic when I discussed with my friend they only comment on my decision. Any way after that my self do research in market, Internet, News paper etc abut the different brands and capacity of bike present in the market.

In last Finally I decided to bye a Pulsar 150 DTSi. 2 Feb 2006 Finally I Purchase.

Some technical discussion about the bike I want to share with all of my fans

In the market famous brand present are suzki, yahma, Handa,hero Honda. They have basically different category of bike i.e. 100 cc ,110cc,125cc,150cc,180cc,200cc,235cc etc.But nowadays youngsters wants what they have dream to keep a stylish, good pickup, good grip on road bike. In this scenario bike company’s with the thinking of cost, mileage, style, youngsters  choose to launch a 150cc bike that give tradeoff  cost against the requirement of all the customers of all the different category.

In this row Bajaj had Launch the Pulsar150 DTSi in the competion of Honda Unicorn, Hero Honda Achiver , Hero Honda CBZ etc.

This bike engine is Develop with Japanese technology DTSi (Digital Twin Spark Ignition system) comes with a throttle actuated ignition-control system that works in conjunction with a microprocessor chip-controlled digital capacitor discharge ignition (CDI) system for accurate ignition timing under all conditions. The dual spark mechanism in rectangular combustion box use maximum air and fuel mixture and give optimum accelerates and evens out flame propagation , which results in more efficient combustion and hence leads to better performance.

On the other hands outer company use single sparking mechanism in his combustion box due this fuel combustion is not better.


The new Pulsar’s 150cc engine delivers a power output of 13.10bhp at 8500 rpm. It has a wonderful pickup clocking 0-60kmph in 5.66 seconds. It produces a maximum torque of 12.28 Nm @ 6500 rpm. The Pulsar engine remains relatively smooth but when pushed hard it does lose some of its smoothness. Also at low speed and at low momentum the Pulsar engine does feel a bit lumpy.

Design and Comfort

From 2004 to 2009 Pulsar changes design remarkable 2009 series is much styles than older one Bajaj has added few new features to its flagship product pulsar 150cc.Its tank has been taken from 200cc series. Its huge tank of 10.5 liter is large and stylish. Large take fulfill the requirement of long drive users. Pulsar 150cc also gets a powerful headlamp which now gets power directly from the battery. However the engine remains unchanged, the transmission is slick and precise. Heel and toe lever gives pulsar 150cc an attractive look. The tail part of the bike is nicely designed. The new razor sharp rear light definitely adds to the uniqueness of Bajaj Pulsar.

Riding and handling

Riding position on the Pulsar 150 DTSi is much sportier as compared to other bikes. The quality of the ride is the best among the 150 cc bikes, thanks to its plush shock absorbers.

Even Its works fine over the top speed of 105Km/h.

New Pulsar 150 comes in 4 different colors: Black, Blue, Red, and Silver



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