Unicom New Time Service Characteristics
Through continuous perfection, Unicom New Time CDMA network has become a choice network with wide coverage, high network quality, fine mobile phone, and novel service.
Environmental Protection
Adopting code division multiple access (CDMA) and power control technology, CDMA mobile phone provides higher receiving sensitivity and smaller transmission power; CDMA network transmission power is only 200milliwatt. The power of ordinary call can be controlled within below-zero milliwatt. The radiation effect can be overlooked. Nether talk nor health will be affected!
The reduction of base station and mobile phone transmission power also greatly prolongs the talk time of mobile phone. This signifies that both the battery and mobile phone have been extended. This plays protective role for both environment and human body. Therefore, it is called green mobile phone.
Clear Voice
CDMA adopts advanced voice activation and voice coding, changes and adjusts data transmission rate and transmission level according to background noise, thus greatly controls background noise, and user can easily talk even in noisy environment. In addition to the excellent communication quality of the system, the voice becomes much clear and sounds the same as fixed line telephone.
Stable Calls
CDMA comes from military anti-jamming system. Moreover, CDMA signal occupies entire frequency range, comparing with the same bandwidth, CDMA system is 4-5 times of GSM capacity. Network congestion has been reduced by a great deal and call completing rate has been naturally improved.
CDMA adopts soft switchover technology, i.e., CDMA only disconnects with the original base station until confirms that the mobile phone has been shifted to the individual coverage area of another base station. Therefore, the call of mobile phone will not be interrupted and the continuity of communication is guaranteed. By use of wideband carrier frequency transmission and advanced power control technology, CDMA overcomes signal path fading and avoids interrupted availability of signal; meanwhile, it also uses strong error correction channel code, enabling user to maintain stable communication on magnetic suspension train with the speed per hour up to 430km.
High Confidentiality
CDMA stems from military communication field. The frequency expansion technology makes signal difficult to detect. Moreover, CDMA network system will randomly provide a talk code for each call of user. Such code address of call has 4.4 trillion of possible arrangement. Therefore, it is very difficult to crack down the code and intercept the contents of talk. CDMA has incomparable advantage in preventing cross talk, embezzlement, and other aspects comparing with other networks.
High-speed Internet Connection
China Unicom adopts advanced CDMA 1X wireless communication network. The wireless data transmission rate is up to 153.6Kbps, about 3 times of ordinary dial-in network access speed, 4~5 times of GPRS wireless data transmission rate. No matter mobile phone or wireless network access card is used, you can enjoy smooth and high-speed network access service at any time anywhere.
Various Services
Drawing support from CDMA 1X high-speed wireless data communication network, China Unicom provides UNI wireless value-added services including Interactive WAP, Uni-WAP, Uni-Map, Uni-Magic, Music Street , Stream Media, Uni-info, etc. You can step into a well-rounded diversified great world through such a small window as your mobile phone. It can provide you with rich and detailed information and service. Whether you are new generation human, fashionable man and women, or elite, UNI covers all aspects of life, entertainment, and work. UNI helps you to know what you want to know and enjoy what you expect so long as you have such demand. |