1. The system boasts strong compatibility and supports standard SIP 2.0 (RFC3261) and related RFC protocols.

2. Supports single-button direct call to dispatch console; the three function keys can be set at will.

3. Full-duplex intercom feature.

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

5. Telephone Case Design - Waterproof, dustproof, no need for a waterproof cover, aesthetically pleasing and practical.

6. The internal circuit of the telephone employs a universal double-sided integrated circuit, offering accurate dialing, clear conversation, and stable operation.

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

8. The outer shell surface is high-temperature electrostatic powder coating, offering excellent anti-static properties and eye-catching colors.

9. Key components such as handles, hooks, and keyboards are all self-manufactured by our company, with strict quality control and rapid after-sales response.

Suited for environments with special requirements for moisture resistance, fire prevention, noise reduction, dustproofing, and frost prevention, such as subway systems, pipeline corridors, tunnels, highways, power plants, gas stations, docks, and steel mills.

Usage Instructions:

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

2. The called party hears the ringtone → picks up the handset to answer the call, and both parties engage in a normal conversation.

3. Hang up the receiver after the call ends.