1. The system has strong compatibility for expansion, supporting standard SIP 2.0 (RFC3261) and related RFC protocols.

2. Supports single-button direct dial to the console; the three function keys can be positioned freely.

3. Full-duplex intercom function.

4. Speaker and microphone sensitivity are adjustable; optional voice encoding methods include G.729, G.723, G.711, G.722, G.726, and more.

5. Phone case design with waterproof and dustproof features, no need for a waterproof cover, both aesthetically pleasing and practical.

6. The internal circuit of the telephone uses a universal double-sided integrated circuit, featuring accurate dialing, clear通话, and stable operation.

7. Aluminum alloy die-cast housing, high mechanical strength, strong impact resistance.

8. The outer shell surface is high-temperature electrostatic spray painting, offering good anti-static properties and eye-catching colors.

9. Our company manufactures the handles, hangers, and keyboards for critical components in-house, ensuring strict quality control and a quick response to after-sales feedback.

Applicable to environments with special requirements for moisture-proof, fire-retardant, noise-resistant, dust-proof, and frost-proof, such as subway systems, pipeline tunnels, tunnels, highways, power plants, gas stations, docks, and steel mills.

Instructions for Use:

1. Register on the server and dial phone calls according to the server's dialing rules.

2. The called party hears the ringtone → lifts the handle to answer the phone, and both parties engage in a normal conversation.

3. Hang up the receiver after the call ends.