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

2. Full-duplex intercom feature

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

4. Phone case design: waterproof, dustproof, no need for a waterproof cover, aesthetically pleasing and practical.

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

6. The housing surface is high-temperature electrostatic powder coating, offering excellent antistatic properties and eye-catching colors.

7. 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.

Suited for environments such as subways, tunnels, canals, highways, power plants, gas stations, ports, steel mills, etc., where there are special requirements for moisture resistance, fire prevention, noise reduction, dust prevention, and frost resistance.

Usage Instructions:

1. Register to the server, set the corresponding numbers for the three speed-dial keys via the WEB, and when making a call, lift the handset and press the respective speed-dial key for a quick call to the designated number.

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

3. End the call and hang up the receiver.

Under normal use and without any man-made damage, a one-year free warranty is provided.

2. All product handles, hangers, and keyboards are self-manufactured by our company, and sales and service accessories are readily available.

3. Unified Service Hotline: 400-118-2011