タイトルまたは説明

 Functions:
1.Without extensions call missing, refuse fault call.
2. Simultaneously receive callings from *0 sickbed extensions and *0 toilet extensions.
3. Indicates the information of calling.
4. Number-telling times set and volume set.
5. Hand-free function and two-way talkback with the sickbed extensions.
6. The summary area has 1 light per bed, and each light has 4 states, standing for 4 nursing levels separately.
7. Optionally to add the functions of GSM module, music ringing for both host and extensions, extensions broadcast.
8. *0 beds.