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Network Integration
Quick Specifications
 
Detailed Specifications

Next generation instant communications solution for 2.5G and 3G mobile networks.

Push-to-talk (PTT) - a key component in an operator's value-added services roadmap
Today nearly 12 million mobile users in the US use "Direct Connect", a service allowing them to instantly establish walkie-talkie like voice contact with one or several other individuals. The underlying Push-to-talk technology has become part of the current multimedia instant messaging revolution. PTT was included in the 3GPP standardization and identified as a key VAS by mobile operators worldwide.

Target mobile workforces and private radio users
By enabling instant communications inside groups, PTT service offers enterprise customers an efficient tool for increasing their business productivity. By switching to PTT, enterprises using private radio communications gain access to powerful group management features and eliminate unnecessary radios since all communications are over standard mobile handsets.

Retain valuable business subscribers and launch mobile instant messaging services for community users
By addressing enterprise subscribers PTT helps operators retain their highest ARPU users. At the same time the operator can launch "tribal marketing" campaigns and address the mass of community users.

Opencode Push-to-Talk SIP Server

Telecom-class VoIP technology with 3GPP SIP signaling
Studies show that PTT over GPRS/EGPRS performs up to 14 times better than PTT over circuit switched networks. Opencode has developed a packet switched PTT solution using 3GPP SIP signaling in compliance with convergence of tomorrow's networks.

Built-in open Presence Server for seamless integration of new multimedia services
Opencode's PTT solution includes an open Presence Server providing real-time indication of the desired party's ability and willingness to communicate. Presence enables operators to offer attractive new multimedia services. Opencode's Presence Server implements 3GPP SIMPLE protocol for seamless connectivity to external services and client applications.

Flexible Push-to-talk SIP server able to host specific SIP clients
Thanks to its service customization environment Opencode’s PTT server can adapt to specific SIP clients and fulfill the most demanding project requirements.

Opencode PTT SIP Server - example of network integration


  • Person-to-person voice communication
  • Group call completion
  • Multicast voice conferencing
  • Pre-defined group management
  • Name-calling (from list of users and groups)
  • Floor control - controls who may talk
  • Alert messages to busy recipients
  • Presence management
  • Billing abilities: subscription based, minute plans, volume based, event based.
  • Miranda Multi-protocol Messaging client with integration SIP communication plug-in from Opencode.
  • Paging of inactive terminals (before speech frames and even if PTT session already exists)
  • QoS end-to-end optimization
  • Web based administration and OMC
  • Linux RedHat 9 Operating System
  • Real-time QoS monitoring

  • Voice messaging
  • Ad-hoc group management
  • Chat-style group management
  • Tool for regulation requested listening
  • Stand-alone Presence server with 3GPP SIMPLE connectivity.
  • 3GPP SIP header compression (SigComp)
  • OMA PoC Phase 1 and 2 compliance
  • Push-to-SMS & Push-to-email messaging
  • Push-to-PSTN calling
  • Push-to-video calling
  • Network-to-network interfaces (NNI)
  • Server-to-server interfaces
  • Inter-networking thanks to supported Signaling and Media Gateways (SGW and MGW)
What makes your mobile network special?