Global open Trunking architecture (GoTa) is the world's first CDMA-based next generation trunking system that is independently developed and launched by ZTE. 

ZTE and Shandong Satcom, a subsidiary of China Satellite Communications (China Satcom), jointly built a GoTa trial network in Shandong Province, China. The GoTa trial network now has a certain scale, consisting of 68 BTSs, two base station controllers (BSCs), a BSCB, a Mobile Switching System (MSS), a Packet Data Switching Subsystem (PDSS), a Dispatch Subsystem (DSS), a Short Message Service (SMS) system, a Fail Call Notice (FCN) system, a Mobile Location System (MLS) and an Intelligent Network (IN) system. 

Till now, the network has been running smoothly with an ever expanding commercial subscriber base. It has provided a variety of trunking services to Rizhao Port, comprehensive law enforcement brigade, logistics, frontier inspection, 120 Emergency Center, Jinan Iron and Steel Group, the Qingdao Olympic Sailing Regatta, and emergency response for Weifang City.

Shandong Satcom's GoTa network is capable of delivering integrated communications services such as voice, Push to Talk (PTT), packet data, SMS, fail call notice, location-based services (LBS), streaming media, video monitoring, and etc. The following strategies have been adopted to develop the GoTa network:

• Accurate market positioning: The digital trunking communication system, with special applications like emergency dispatch or response, cannot be operated in the same way as the existing mobile communication system. Its application mode should give a full play to its trunking features. Shandong Satcom launched the GoTa system under the brand name "Push to Action", which clarifies the difference between the dedicated trunking and public mobile communications and highlights the unique service advantages created by PTT services.
  • A wealth of services: In addition to professional services such as group call, private call, floor taken, late entry and dynamic regrouping, the GoTa system has also developed rich new services to meet the needs of users, including floor queue, on-line user status query, call restriction, call forwarding, service priority and Do not disturb. With respect to dispatch console, GoTa can provide new functions like "send to group" SMS, status display and number management, in addition to the functions of professional dispatch and management consoles. These rich service functions can satisfy the demands of industrial users for basic services, as well as integrated or combined ones.
    • Detailed enterprise analysis: There are differences in the requirements of different industries on the digital trunking system as they all have different operating procedures. After making a detailed investigation on the specific operation procedure of each industry, Shandong Satcom developed different application solutions that integrate the rich service functionalities of the GoTa system with operating procedures of different industries, ensuring the optimal experience of the industrial users.
      • Diversified network construction modes: Shandong Satcom built its GoTa system in a flexible way. Take the Shandong jail system for an example. Jails in Shandong are distributed over the whole province, and they have a high security and privacy requirement for their communications system. So, Shandong Satcom and the jail system made joint investments to build Base Transceiver Stations (BTSs), which not only saves investments but also satisfies the needs of the jail system.  
        • A flexible tariff policy: Shandong Satcom offers different price packages options for PTT, voice, packet data and SMS services to maximally fulfill the consumption habits of various industries.
          • Perfect after-sales service: ZTE, by closely working with Shandong Satcom, can quickly respond and solve both the system and terminal problems reported by end users. Moreover, follow-up calls to customers help ensure that the end user ultimately has a satisfying experience.

          Conclusion
          GoTa makes use of 3G CDMA 2000 technology and boasts distinct technical advantages. GoTa can meet the requirements of both private and public trunking network applications, and it is particularly attractive to users because it can be bundled with value-added services, offering richer functions compared to other trunking technologies. The successful operation of the GoTa digital trunking system in Shandong provides a good example for the promotion of the digital trunking systems, and the exploration of new revenue-generating market opportunities.