Details：
1. Easy to use, enter the other party's extension number and press the # key to dial out; 2. Supports one click playback of custom audio, as well as one click calling and dialing; 3. Long press the pound key to broadcast the local IP address.
Details：
Application
Self-service banking , railway stations , docks , airports, scenic spots , squares , shopping malls , residential property , municipal engineering , regulatory complaints , convenience services , hospitals , Vehicle and other emergency sites
Details：
1.It is applicable for speedway system to dial-up help call for emergency;
2.It is applicable for railway or metro system to dialup the section telephone;
3.It is applicable for customers to dialup complaining or service telephone of ATM machines or other service stations;
Details：
304 stainless steel casing, this phone has features such as one button automatic alarm, one button cyclic dialing, and one button automatic intercom. It is an essential communication device for elevator emergency assistance and a convenient communication device for clean room intercom. The default hands-free normal dialing mode requires wearing headphones.
Details：
Ordinary dialing function, handset mode; support for checking busy tone, automatic hang-up function; 3 groups of blank keys on the right side can pre-store numbers for one-touch speed dialing; compatible with various program-controlled switches, support switch's multicast function
