* Simple, graceful, use the anti-tamper screw design, high strength panel of 6 mm anti-oxidation alloy, match with aluminum mounting box to support with both embedded mount installation or surface mount installation.
* Embed PC technology, built-in DSP and high speed industrial chip to ensure start time less than 1 second.
* Built-in single network hardware audio decoding module, support TCP/IP ,UDP, IGMP(Multicast)protocol, transmit 16-bit stereo audio signal of CD quality through network transmission.
* Built-in voice intercom call module, supports full-duplex voice intercom and conversation, with high performance DSP sound process, support digital echo elimination and audio compression.
* Built-in 5W high-fidelity all frequency speaker to ensure the telephone voice clear and loud， Built-in 10W digital resistance power amplifier which can external connected with Constant resistance 10W *4Ω Speaker.
* Built-in high sensitivity microphone, support hands-free calls and customized answer way with large sound acquisition range and high sound reduction degree.
* Built-in monitor function, support service level management of recording, built-in auxiliary audio IO with perfect butt joint monitor system.
* Built-in return from access state, access control, fire alarm control, camera tracking and security functions.
* Built-in collection sign in of security patrol function
* Built-in access state return, access control, fire alarm control, camera tracking and security functions etc
* Support customize call target, one key to making fast call and a key for asking help.
* Support multiple call strategy, including call waiting, call forwarding, unanswered reminder;
* Support customize the time transfer time, no one answered, call waiting time.
* Support call for person, automatic call forward functions and the phone number can be set.
* Support preset program broadcasting and support network remote trigger program broadcast.
* Support customize hang up mode, has active and passive mode for choose.
* Support PSTN phone broadcast and text and voice broadcast.
* Support WIFI on demand and on demand of wireless remote control;
* Protection grade is IP55, overall adopt alloy material and anti-dismantle screw , explosion proof and waterproof.
* Support DHCP, compatible routers, switches, Bridges, Modem, Internet, 2G, 3G, 4G, arbitrary, multicast, etc.
* Support at least three high security authorization IP configuration scheme, safety coefficient is much higher than the Web such as remote configuration scheme
* Authorization operations management functions, support the server configuration management user and password.
* Support play function work normally and smoothly during digital audio breakpoint to ensure Broadcast synchronization.
* Support prompt function of new configuration intelligent voice reminder.
* Support 15 KVESD protection. Built-in network isolation anti-thunder processing circuit.
* Easy to expand, without being limited by the geographical position. No need for increase management equipment of engine room, simple installation for with network construction design concept.
