Remark：
YC-A single page system: unending calling, calling storage, lamp indicated the calling sickbed no and notice sound, and corridor indication screen.
Type and function: Main component: 1. main phone 2. extension Option:
Option: 1. corridor indication screen
Functions: 1、Unending calling: whenever if there is a call, it can be connected.
2、Calling storage: when the extension calls the main phone, if the main phone has no answer or is working, the main phone will automatically store the extension no and indicate.
3、Corridor indication screen: indicate the calling situation of the extension in time.
4、Easy installation: main phone and all the extensions, corridor indication screen just use the two normal soft wires, no polarity, parallel connection.
Outer installed extension  |
Inner installed extension  |
I type corridor indication screen  |
II type corridor indication screen  | |
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