Push-to-Talk (PTT) is a useful capability for rapidly deployable wireless mesh networks used by first responders. PTT allows several users to speak with each other while using a single, half-duplex, communication channel, such that only one user speaks at a time while all other users listen. This paper should present the architecture and protocol of a fault tolerant PTT service for PTT in all IP Networks.

keywords need to use in report : 

Push To Talk (PTT), PoC, SIP Clients, High Availability, Fault Tolerance in Network, Redundancy

Report should be framed as : 

• Introduction
• Literature survey
• Background
• Fault tolerant ptt solution
• Performance analysis
• Conclusions and enhancements
• References