Home › Technical Info › Client

Client

Speago PoC Client is an add-on Push-to-talk application for handsets and other devices. It transforms any supported device into a "walkie-talkie" phone. The client has a presence-enabled contact list that shows each user's availability and willingness to communicate.

Push to talk over Cellular (PoC) is an IP based half-duplex voice service for mobile phones. It enables easy-to-use “walkie-talkie” style communication for the users of packet data mobile networks. The PoC service does not suffer from the usual walkie-talkie range limits because it uses the cellular network.

Features

Speago PoC Client is one of the most full-featured client implementations of the OMA PoC 1.0 specification and supports:

  • One-to-one communication
  • Group communication
    • Pre-arranged Groups
    • Temporary Groups (Ad-hoc Groups)
    • Chat Groups
  • Several simultaneous calls (Simultaneous Sessions)
  • Presence-enabled contact-list
  • Fast call setup times (with the help of signaling compression)
  • Transport/bearer independence
  • Intuitive and easy-to-use user interface
  • Audio indications of when to talk/listen

The user can make push-to-talk calls to individual users, several users (ad-hoc & prearranged groups), and join existing chat groups with a push of a button. With the simultaneous sessions feature, the user can have several ongoing push-to-talk calls at the same time. The client is bearer independent and works, for example, over 2,5G, 3G, 4G and WLAN networks. It can be easily installed on any device with a supported platform.

Standards Compliance and Interoperability

Early implementations of push-to-talk were vendor-specific and interoperability between clients and servers from different manufacturers was not possible. Open Mobile Alliance (OMA) has released a vendor-independent specification for push-to-talk called OMA PoC 1.0. Speago PoC Client implements this specification as well as OMA Presence 1.0 and is thus able to communicate with other OMA-compliant clients and servers, including Speago PoC/Presence Server Suite.

The client has been verified to be compatible with IMS systems, PoC servers, and PoC clients from several different vendors during OMA interoperability test events and in bilateral interoperability testing.