4008 telephone is a 400 telephone operated by China Telecom, with the number ranging from 40080000 to 40089999, with a total number of * * * 1 10,000.
The 4007 telephone is a 400 telephone operated by China Tietong (now owned by China Mobile), and the number ranges from 400700000 to 40079999, with a total number of * * * 1 10,000.
400 1 phone is the first 400 phone of China Mobile, and the number ranges from 400 100000 to 400 199999, with a total number of * * * 1 10,000.
Whether it is 4006, 4000, 4008, 4007 or 400 1, the voice transmission specifications are the same, but the voice transmission quality is different for different operators because of different technologies and equipment.
Technical data analysis shows that the call quality of 4006 is slightly better than that of 4008, and 4008 is better than that of 4007. 4000,4001were recently introduced, so their voice transmission quality is not clear. In terms of tariffs, 4007 is the lowest, and the market retail price has been lower than 0. 1 yuan. However, after China Tietong was merged into China Mobile, 4007 became a stepmother's child, and the maintenance was stretched. If 400 1 is officially launched, I'm afraid 4007 will be out of the historical stage. From the comprehensive comparison of voice transmission quality, tariff and number resources, 4006 should be the most suitable for small and medium-sized enterprises. Not only the service is stable, but also the tariff is low and the number resources are extremely rich.
In addition, once again, 400 telephone is the national basic voice service, regardless of regions, that is to say, it doesn't matter whether it is Beijing 400 telephone, Shanghai 400 telephone or Shenzhen 400 telephone.