Rugged Headwall Tunnel Telephone JWAT306P-KJ
This rugged, IP67-rated headwall tunnel telephone ensures reliable emergency communication in harsh underground environments. Featuring a durable aluminum shell, loudspeaker, flashing light, noise-canceling microphone, illuminated keypad, SIP network support, multiple audio codecs, and compliance with CE, FCC, RoHS, and ISO9001 standards.
Our rugged headwall tunnel telephone JWAT306P-KJ provides critical emergency communication for transportation and heavy industry sectors. Designed specifically for subterranean and harsh infrastructure, this device is typically wall-mounted along highway tunnels, subway station headwalls, railway corridors, and deep underground mining shafts where standard communication lines fail.
It combines a highly durable aluminum alloy die-cast shell with an IP67 weatherproof rating, offering superior mechanical strength and strong impact resistance.
Fully equipped for both high-noise areas and emergency scenarios, the unit features an integrated 15–25W horn loudspeaker and a bright DC12V flashing light to ensure alerts are seen and heard in the darkest, loudest conditions.
- The heavy-duty handset includes a hearing aid-compatible receiver and a built-in noise-canceling microphone to guarantee crystal-clear audio during emergencies.
- An illuminated stainless steel keypad allows for easy operation in low-light environments, with buttons that can be specifically configured for SOS, repeat dialing, or other custom functions.
- Advanced network capabilities support 2 lines of SIP (SIP 2.0, RFC3261) alongside a full suite of IP protocols, including IPv4, TCP, UDP, TFTP, RTP, RTCP, DHCP, and SIP.
- High-quality, full-duplex communication is supported by multiple audio codes (G.711, G.722, G.729) and G.167/G.168 echo cancellation codes.
- Network routing is highly flexible, supporting Bridge mode on WAN/LAN, PPPoE for xDSL, and DHCP for obtaining an IP address on the WAN port.
- The hardware can be customized with multiple color options to match facility aesthetics and is easily maintained using available self-made spare parts.
- The device ensures reliable safety and manufacturing quality by remaining fully compliant with CE, FCC, RoHS, and ISO9001 standards.
| Item | Technical data |
| Signal Voltage | 100-230VAC |
| Standby Work Current | ≤0.2A |
| Frequency Response | 250~3000 Hz |
| Amplified Output Power | 10~25W |
| Corrosion Grade | WF1 |
| Ambient Temperature | -40~+70℃ |
| Atmospheric Pressure | 80~110KPa |
| Relative Humidity | ≤95% |
| Cable Gland | 3-PG11 |
| Installation | Wall-mounted |
| Signal Voltage | 100-230VAC |

Unit size:339*246*126mm
Carton Size: 470*290*210mm
Package materials: Pearl cotton
N.W:6.5KG
G.W:7KG

Joiwo headwall tunnel telephone JWAT306P-KJ is a robust communication solution designed for the world’s harshest environments. Engineered for mission-critical applications, it delivers stable, reliable, and interference-free voice communication in demanding sectors such as mining, tunnels, and other industrial sites, where dust, humidity, and vibration are constant challenges.
Featuring a waterproof, corrosion-resistant, and UV-resistant design, the JWAT306P-KJ ensures long-term durability and dependable performance in marine and outdoor applications. Built to enhance operational safety and efficiency, it provides a reliable communication lifeline in environments where failure is not an option.

Joiwo is committed to providing efficient and reliable emergency communication systems for key industries such as highways, tunnels, maritime affairs, and mining, and ensures user safety and operational continuity with high-quality products and system solutions.




