What's Push to talk (PTT)?

Push to Talk over Cellular is a feature similar to walkie-talkie that is provided over a cellular phone network. A typical Push to Talk connection connects almost instantly. One significant advantage of PoC is allowing a single person to reach an active talk group at a button press, thus users no longer need to make several calls to coordinate with a group.

Traditional mobile phone networks and devices utilize full-duplex communications, allowing customers to call other persons on a mobile or land-line network and be able to simultaneously talk and hear the other party. Such communications require a connection to be started by dialing a phone number and the other party answering the call, and the connection remains active until either party ends the call or the connection is dropped due to signal loss or a network outage.

Such a system does not allow for casual transmissions to be sent to other parties on the network without first dialing them up, as is provided by two-way radios. Full-duplex operation on mobile phone networks is made possible by using separate frequencies for transmission and reception.

IMS PoC Client is the Juphoon's compliance with the OMA PoC, XDM, Presence regulate the use of an ordinary mobile phone application service.

Poc Client Features:

The PoC/Presence Client for Windows Mobile enables one-to-one calls as well as group communication with a push of a button.

PoC Presence/IM

• Contact presence status(online, offline, dnd)
• Session presence status
• Instanct person alert(IPA)
• Group Advertise

PoC XDMC

• XCAP Directory
• Contact List (resource list)
• Poc Access Policy (poc rule)
• Presence Access Policy (presence rule)
• Group List and Acess Policy (poc group and rule)
• Presence Service URI (RLS service)
• Group Usage List

PoC Answor Mode

• Auto answer
• Manual Answer
• Do not disturb

PoC Maintenance

• Session histroy
• IPA history
• Group Advertise history
• Signal history(SIP, XCAP, HTTP et.)

PoC App Develope

• Develop environment can be Windows PC, Mobile, CE, ThreadX, Symbian etc mobile platform
• Customer can make a standard PoC application less than 2 weeks by our GUI adapter.

PoC Client Reference Design:

Supported operations:

The user can talk with each other which used Windows Mobile,Symbian,Linux,ThreadX operations.

PoC Client Architecture

Inter-operated Test PoC Server

Resource Download

• IMS PoC Client Brochure
• IMS PoC Client Lite 0.1 (Windows PC Demo)
• IMS PoC Client Lite 0.1 (07/25/2008) for WinXP
• IMS PoC Client Lite 0.1 (10/27/2008) for PocketPC
• IMS PoC Client Lite 0.1 (10/27/2008) for Mobile5