According to the monitoring survey made in September 2000 by the operation department of a communication company, 54% of all the called phones will subject to weak signal or blind signal; 67% end users will dial twice continuously if the call can not get through or use another method to communicate the missed call. As a mater of fact, this phenomenon is found by every communication operator. From end users point of view, a failed phone call not only means a waste of time and efficiency degeneration but also make them feel no trust to the service provided; while as to mobile or fixed network operators, network defect making phone call impossible not only wastes system resources and decreases call successful rate but also causes traffic and revenue missing. The initial purpose of call missing service is to enable the system the ability to recorded inbound call information which will be subsequently notified to end users when such user is unable to access the inbound call (such as out of service and power off ) so as to make the end user to obtain the missed call information at the earliest time. This service benefits end users in avoiding the missing of important information and improve their satisfaction, while it is of great help to enhance the operator’s reputation and strengthen their competitive power. Therefore, this application is helpful to both end users and operators, and it will not survive long if this application is only limited to inbound call number display.

Thus, calling protection service can be developed to a comprehensive oriented value-added service.

It is believed by Donjin Tech that, the early calling protection service is the output of operators’ consideration on own benefit and convenience aimed at network defect remedy, for such reason its service flow and marketing strategy intentionally or unintentionally ignore the actual demand of end users. Confronting with the intensified market competition currently, this service shall be converted from technology oriented to end user oriented, which is to say to put end users’ demand as the basis for which such service is designed and put it into every phase forming such service. For doing so, Donjin Tech proposed the systematic call mission protection solution based on its survey made together with mobile and fixed network operators at each place and its deep understating on telecom market and telecom industry itself. Such solution is designed based on operators’ existing infrastructural network resource, innovative in many aspects for the consideration on end users’ demands, and has done best it can be done in solving end users’ call mission problems and operators’ many troubles from the base root.

Firstly, it is the result of business idea innovation. The early call mission protection service is only for the purpose of remedying communication network defect, but Donjin call missing service is based on the actual demand of end users and not limited to call missing protection only but putting it through the whole process of telephone service. Donjin believes that, while a user likes to know what call is missing, he/she doesn’t like to listen to not welcomed phone call; a user is able to not only dial phone freely but also manage own phone call; call missing protection is not only applied to the called party but also to calling party; call missing protection is not only applied to individual users but also to group users. Based on the foregoing idea, Donjin call missing protection solution is developed on basis of complete analysis on the whole process of how a end user uses his/her phone as an integrated and comprehensive telecom value-added service embedded with functions of call missing reminder, communication management, status inquiry and security strategy.

Secondly, it is the result of business meanings innovation. Telecom subscribers shall not be understood as mobile or fixed phone subscribers. Subscribers are possibly use different communication terminals during different time at different places, such as PC, fax machine and PDA, etc., plus the difference among subscribers in service media, way and custom, therefore the service platform shall be capable to access multiple services. For such purpose, Donjin call missing protection service has been introduced and integrated with voice box, outbound call, Fax, IVR, Web and Agent and other new service means except for provision of SMS as the result of making full use its advancement and expertise in areas of media processing, voice exchange and signaling junction. An end user is able to optionally select a suitable way to manage the whole phone call process according to own needs while using Donjin call mission protection service; meanwhile, this also enrich operators’ marketing strategy, enabling their ability to carry out combined marketing using own BOSS and win customers and increase revenue with further broken-down marketing strategy.

Thirdly, it is the result of business mode innovation. Donjin call missing service platform integrates the business modes of telecom operators and their partners under a telecom-level, open and standard system structure. With functionality provision of configuration management, log management, alarm/defect management, data backup management, this system is capable not only to connect BOSS of existing operators but also provide partners with flexible service interfaces for stable system connection by using the system own equipped BOSS so as to make a uniformed coordination mechanism, bring its partners’ potential and their advantages into full play, and penetrate into wider market.

By using Donjin call missing hardware service platform, Donjin’s partners successfully implemented it in operators in over 20 provinces, autonomous regions and municipalities, as the result, it effectively settled call missing problems for subscribers and enhanced users’ satisfaction; while, at the same time, it maximized the investment made by operators in the initial stage of infrastructural construction and set solid foundation for launching other value-added services in the future.