Analog telephone KNSP-03T3J

VoIPSIPIP

Product overview
The KNSP-03T3J is an industrial railway emergency telephone designed for trackside, tunnel and roadside emergency installations. Aluminium alloy die-cast housing, IP66 protection and vandal-resistant hardware make it suitable for harsh outdoor environments and extreme temperatures. Model references: Analogue SP0010012, VoIP SP0010032.

Key features

• Aluminium alloy die-cast body with vandal- and tamper-resistant fittings for secure installation.
• Ingress protection IP66 against dust and powerful water jets.
• Available without keypad; hotline configuration supported.
• Self-orienting, self-closing door cover for user protection and easy access.
• Operating range: service temperature from -30°C to +75°C.
• Magnetic reed hook-switch and lightning protection to ITU‑T K.21.
• Heavy-duty handset with hearing-aid compatible receiver and noise‑cancelling microphone on industrial curly cord.
• Optional silicone keypad for waterproof/dustproof protection when keypad is fitted.
• Phone integrity wiring for system monitoring (if PBX/PABX supports it) and optional 7-minute auto timeout.
• Powder-coated UV-stabilized polyester finish; optional reflective label for night identification.

Specification - Analogue (Model NO. SP0010012)

• PSTN analogue telephone with DTMF dialing.
• MTBF: 100,000 hours; MTTR: 2 hours.
• Connection: RJ11 screw terminal pair (or RJ11 socket/plug on request); stainless-steel cable protection optional.
• Ringing level: >70 dB(A).
• Call transmission (5 km): SLR < 12, RLR < -1, STMR > 10; output impedance 600 Ω; maximum distance: 7 km.
• Compatible with SPC exchanges, PABX and dispatch systems with feeding voltage 33–60 V.
• Memory dialing: up to 12 groups, each number up to 16 digits.
• DTMF standard frequencies and typical environmental ranges: ambient -30 to +60°C, RH 10%–95%, noise <60 dB(A).

Specification - VoIP (Model NO. SP0010032)

• VoIP SIP 2.0 telephone supporting RFC2833 / SIP INFO DTMF.
• Audio codecs: G.711, G.722, G.729; echo cancellation G.167/G.168.
• Network: 10/100 Base-TX, RJ45, Cat5e or better; PoE IEEE 802.3af (Class 0) or 12 VDC local power. Idle 2W, Max 10W.
• Protocols: IPv4, TCP, UDP, TFTP, RTP, RTCP, DHCP, SIP; Web GUI configuration and non-volatile flash memory.
• Auxiliary dry-contact output (1 aux), rated loads up to 0.3 A @125 VAC / 1 A @30 VDC.
• Full-duplex hands-free communication, remote software upgrade and centralized monitoring supported.

Applications
Designed for railway trackside and tunnel installations, metro and LRT systems, roadside emergency points, highways, marine/offshore platforms, mines, power plants, bridges and other harsh outdoor sites.

Technical specifications

• Model: KNSP-03T3J (Item No. SP0030012).
• Size: 320 × 205 × 120 mm; Net weight: ~5.3 kg; packaging: 1 unit/inner box, 6 units/carton.
• Material: aluminium alloy die-cast housing with UV-stabilized polyester powder coat.
• Protection: IP66.
• Operating temperature: approx. -30°C to +60/+75°C depending on configuration.
• Handset: heavy-duty, hearing-aid compatible receiver, noise-cancelling microphone, industrial curly cord.
• Connectivity (analogue): RJ11 terminal, up to 7 km line; (VoIP): RJ45, PoE or 12 VDC.
• Reliability: MTBF 100,000 hours; MTTR 2 hours. Optional: phone integrity wiring, 7-minute auto timeout, reflective label, auxiliary contact (VoIP).