I. Functional Overview
1. Wall-mounted installation with an aesthetically pleasing appearance.
2. Aluminum alloy die-cast housing with an IP67 waterproof and dustproof rating.
3. Supports SIP 2.0 protocol, capable of registering two SIP accounts.
4. Supports free dialing or automatic dialing upon off-hook.
5. Supports automatic call answering and broadcast activation.
6. Supports AC/DC power supply or PoE power supply.
7. Supports busy tone detection for call termination.
8. Features an audio output interface for connecting external active speakers for broadcasting (customizable).
9. Supports I/O signal input and output interfaces.

II. Operation and Usage
1. Off-hook/On-hook method: Controlled by the handset; off-hook connects the call, on-hook disconnects.
2. Answering calls: When there is an incoming call, the phone rings. Pick up the handset to communicate with the caller, and hang up the handset after the conversation ends.
3. Making calls: Pick up the handset to automatically dial the preset number. Once the other party responds, communication can begin.

III. Main Technical Parameters
1. Supports connection to various types of network switches and SIP broadcast dispatch servers.
2. Temperature: -40°C to 75°C; Relative humidity: 10% to 95%; Atmospheric pressure: 86–106 kPa; Ambient noise: ≤100 dB(A) 
3. Ringer sound level: ≥70 dB 
4. Supports standard SIP 2.0 protocol, with waterproof gland RJ45 interface.
5. Supports PoE power supply or mains power supply (optional).

IV. Packaging Dimensions
Unit dimensions: 355*260*130 (mm)
Outer box dimensions: 439*277*191 (mm)
Packaging materials: EPE foam, carton
Gross weight: 9 kg
Net weight: 7.2 kg