* Large LCD, green(HGT2130)/blue(HGT2131) backlight display, real-time clock display
* Touch key, digital keyboard input, humanized operation
* 8 64-gate extension address, capable of connecting with diversified extensions and telephone sockets for subscriber's selection and lower project cost
* Automatic sound recording and automatic record of call address and duration during the call
* Through-dialing communication between the main set and extensions, call and communication between the main set and several extensions
* Outside connection for local call, automatic dialing of fire alarm telephone 119
* Manual dialing of outside connection for local call
* Provided with tone output, the call contents can be sent to other broadcasting equipment for external telephone broadcast dispatching or recording
