SS7 USSD Center | USSD gateway | USSD platform

The USSD platform, Unrestricted Supplementary Service Data (USSD), is used by the mobile interaction business to send text between a mobile phone and an application program interacting promptly with end-user. USSD gateway transactions only take place while mobile phones are turned on. USSD messages travel over SS7 signaling channels, providing a fast way for customer connections and data transfer. USSD platform transactions respond in less than a second.


The USSD platform solution is suitable for:

  • Mobile initiated and network-initiated USSD for mobile user interaction.
  • News with use of RSS feeds
  • Chat services
  • Quiz, survey, Q&A service
  • Polling service
  • Banking

Enabling VAS based on USSD gateway interaction and cost savings

The USSD center has full SS7 interfaces and flexible IP interfaces that allow interaction with applications that manage value-added services.

Operators in the ICT industry can use the USSD gateway for the management of USSD transactions between mobile and the internet-based part of the industry.

This enables the operators of the USSD center to offer value-added services based on USSD interactions with mobile end-users and to save costs in the operations.

Specifications for USSD platform:

  • Up to 8 SS7 TDM E1 lines, up to 16 signaling time slots per E1
  • Runs on industry-standard x86-64 server hardware with digital interface cards (e.g. Digium, Sangoma, Openvox)
  • Network initiated (Mobile Terminated) USSD
  • User-initiated (Mobile Originated) USSD
  • Up to 60,000 simultaneous sessions
  • Distributed architecture (USSD service and E1/SIGTRAN MTP3 service on different servers)

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