Ring back tones or color ring back tones(crbt) is a value added service in which if the called party has crbt then the calling party will hear song when the called party number is dialed. This article first explains the CRBT call flow in a mobile network , then a block diagram explaining the CRBT system connection to other parts in IN(Intelligent Nework). Finally the CRBT system hardware and software itself is explained. Suppose subscriber A makes a call to subscriber B and the subscriber B has CRBT enabled. Also suppose that subscriber A and B are in different geographical location so that ....
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Mobile Network Parameters and Number Planning and Coding Plan
Posted by admin on December 20th, 2011
This article explains the mobile network number system, its planning and coding 1. Network Parameters 1.1 Mobile Subscriber ISDN Number (MSISDN) An MSISDN is the number that a calling dials to call a user in a digital PLMN cellular mobile communications network. The number format is as follows: CC + NDC + SN CC: country code, for example, 86 for China. NDC: Mobile service access number, for example, 130 ~ 139 for China SN: Comprise of HLR identification number(H0H1H2H3) and subscriber number in each HLR(ABCD). 1.2 International Mobile Subscriber Identity (IMSI) The IMSI is the ....
Mobile Base Station Transceiver(BTS) Configuration
Posted by admin on December 17th, 2011
Introduction In Mobile Communication, BTS(Base Transceiver Station) or Wireless Base are communication node placed appropriately within the area of region where Mobile Communication Network is to be deployed. How they are placed is subject to mobile network planning but in brief they are usually placed at the separation of 1km to 2 km from each other. The radio signal coverage of the BTS depends on many factors such as the transmitting power, height of BTS antenna, the sectoring of patch antenna and requirements of the coverage area. BTS is also commonly called as Base station Radio or simply ....
Microwave Radio Installation and Commissioning
Posted by admin on July 2nd, 2010
In Mobile Network, microwave radio are used to transfer data between BTS sites, between BTS and BSC or MSC. There are both advantages and disadvantages of using Microwave Radio links. Microwave radio communication is normally used for sites which are located in rural areas where site accessibility is difficult. It is because the cost of Microwave Radio communication installation and commissioning is cheaper and it's also easier to implement than other transmission technology such as Optical fiber. The disadvantage of Microwave Radio over Optical fiber is the data transmission speed and interference. ....
