• VOIP communication is based on SIP agreement、RTP agreement、TCP/UDP agreement• Provision of constructing VOIP server termination based on windows and LINUX system.
·Recording and playing of terminal voice
·DRDR dead reckoning navigation
·Change the terminal call permission according to requirement.
·One-one and one-multi calls between terminals
·Set up high permission terminal which can interrupt in communication and call across the spectrum
·Emergency call, which can break in on other ongoing call
·Manage different clients based on different business customer
·Automatic and manual control voice answering mode