Telecommunication and Mobile Broadband Service » Sharing http://telecomandinternet.com Telecommunication service, Broadband service,telecomunication system, telecommunication technology, telecommunication business, mobile internet service, broadband service, wireless service, mobile broadband service, broadband technology, broadband modem, mobile broadband technology Fri, 30 Jul 2010 20:36:15 +0000 en hourly 1 The call flow of Data Service http://telecomandinternet.com/the-call-flow-of-data-service/ http://telecomandinternet.com/the-call-flow-of-data-service/#comments Sat, 22 Aug 2009 13:14:13 +0000 engineer http://telecomandinternet.com/?p=51 There are many telecommunication services can be optimized by Telecommunication Company to gain as much as revenue instead of traditional service (voice call and SMS) and one of them is Data Service e.g. mobile broadband internet service. Data Service could be internet access e.g. mobile broadband internet service through wireless network or Value . . . → Read More: The call flow of Data Service]]> There are many telecommunication services can be optimized by Telecommunication Company to gain as much as revenue instead of traditional service (voice call and SMS) and one of them is Data Service e.g. mobile broadband internet service. Data Service could be internet access e.g. mobile broadband internet service through wireless network or Value Added Services (VAS) which utilized Data Service platform e.g. a service based on BREW and WAP platform. The term of Data Service is usually associated with wireless or mobile broadband internet services which include CDMA 1x 2000, GPRS, EVDO or 3G services.

To make Data Service happens, Telecommunication Company need to insert new network infrastructures to the existing network e.g. Public Data Service Node (PDSN), SGSN/GGSN and charging system to charge the subscribers while they access to internet. How the call flow of Data Service is happening from subscribers until they reach internet access on their mobile phone or computer/laptop. Herewith the network infrastructures which involved on the call flow of Data Service. In this scenario, it was deploying on the CDMA network

  1. mobile phone, computer/laptop or modem
  2. Base Transceiver Station (BTS)
  3. Base Station Controller (BSC)
  4. Mobile Switching Centre (MSC)
  5. Home Local Register/Visitor Local Register (HLR/VLR)
  6. Public Data Service Node (PDSN)
  7. Intelligent Network (IN)
  8. Authentication, Accounting and Authorization (AAA) or Charging System
  9. Firewall
  10. Bandwidth to internet gateway

The call flow of Data Service e.g mobile broadband internet service is just like voice call flow. The different is type of service which be retrieved by subscribers. Therefore, Data Service call flow will be routed to the network infrastructures where voice call served and then route to Data Service’s networks element to have internet service.

First step, subscribers will make a session through the mobile phone (WAP application) or computer/laptop that connects to modem. If voice call session starts the process by dialing to the destination, Data Service started by dialing to certainty number for example #777 so then MSC will identify that it is Data Service process. The next step, call flow will land on BTS, BSC, MSC and HLR/VLR. Once MSC noticed that it is a Data Service call, MSC will forward the request to PDSN. PDSN will assign a certainty IP Pool once the session was authenticated. PDSN also will forward the request to Accounting server or charging system to assign a tariff.

AAA server or charging system will assign certainty tariff once they noticed that the phone number used by subscribers to make a Data Service is a valid number. Finally, PDSN will request internet traffic and then forward back to the subscribers. In this section, subscriber will be able to browse to internet. Firewall was installed to protect internal network keep secure

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]]> http://telecomandinternet.com/the-call-flow-of-data-service/feed/ 17 How the call session is going on? http://telecomandinternet.com/how-the-call-session-is-going-on/ http://telecomandinternet.com/how-the-call-session-is-going-on/#comments Fri, 21 Aug 2009 00:39:10 +0000 engineer http://telecomandinternet.com/?p=42 While you make a call to your friend, family or partner out there through your mobile phone which handled by mobile or fix wireless providers, actually there are so many network infrastructures indeed to make this call succeed. The entire of telecommunication system to make call process succeed is running very fast, therefore, you . . . → Read More: How the call session is going on?]]> While you make a call to your friend, family or partner out there through your mobile phone which handled by mobile or fix wireless providers, actually there are so many network infrastructures indeed to make this call succeed. The entire of telecommunication system to make call process succeed is running very fast, therefore, you will not experience any delay from your calling partner even they locate far away from you. The same case happens on mobile internet service. How the call between you and your call session calling partner is going? Herewith are the telecommunication system which involve to this call process

  1. Mobile (MS)
  2. Base Transceiver Station (BTS)
  3. Transmission media
  4. Base Station Controller (BSC)
  5. Home Location Register (HLR) or Visitor Location Register (VLR)
  6. Intelligent Network (IN)
  7. Mobile Switching Control (MSC)

Those telecommunication elements above are minimum requirement needed to make a call session or data session on mobile internet service is going on. Actually there are more network element involved during call session but the will not discus here

The first step is you dial to the destination number through your mobile phone or handset. Mobile Station could be your mobile phone, fixed phone or VOIP call via computer. BTS which covered your mobile phone number will take over this dial process to be delivered to the destination number. BTS area is a station where usually contain a tower and shelter to place some equipment e.g. BTS itself, indoor unit of transmission media, power or battery and E1 termination. Shelter should keep on cool to ensure that all equipments are running proper. Meanwhile tower are used for transmit and receive all session either call, SMS or data services (mobile internet service ) from subscriber to the calling partner or to internet gateway

BTS will deliver and receive the telecommunication services from one subscriber to another one through transmission media which are usually using microwave radio, optical fiber and satellite. Media transmission is “the way” where traffic from subscriber or any source address will be delivered to another subscriber or destination address.

The next destination is the call session will land to BSC. BSC is collection of BTS that built in comprehensive equipment. BSC will take over the call session delivered by BTS and will identify what proper next destination. BSC then deliver the call session to MSC. MSC will check the mobile phone number whether he is valid phone number to make a call and identify who making a call is. MSC will request to HLR if the phone number is registered here and if not then MSC will try to find on the VLR if he/she is a visitor.

Once MSC ensure that the phone number is valid number on the database (HLR or VLR), the last step is balance deduction process on the IN. If subscribers balance is enough then balance will be deducted and voice session will happen and vice versa.

Actually the call process that happens on the telecommunication element is more complicate and each of them is related which means that if any disturbance to the one of them; it will impact to the call service. or data service on mobile internet service. The call service could be going to have poor performance or worst case they will get a call drop. But if they all run proper the call session will happen very fast as if you talk directly to your calling partner

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