Interquartz enterprise telephones, terminals, and headset systems

Interquartz telecommunications hardware: IQ330 POTS handsets, IQ333EHS speakerphones with EHS support, IQ283 hospitality phones, and IQ8830 IP65 handsets.

Interquartz: enterprise telecom terminals and telephones since 1981

Interquartz was founded in 1981 and is recognized as a distinguished manufacturer of analogue POTS and IP communication equipment. Over four decades the brand has delivered over one million telephone handsets to corporate clients, healthcare facilities, and hotels.

Telecommunications hardware deployed across over 5,000 corporate clients
Manufacturing lineage originating from International Quartz Limited in 1976
Rugged analogue handsets, IP terminal solutions, and handsfree speakerphones
Non-volatile memory retaining stored numbers without battery backup systems

Interquartz IQ283 hospitality and enterprise telephone series

The Interquartz IQ283 family is engineered for hotels, reception counters, and corporate workspaces. Each phone incorporates a full-size removable faceplate for custom branding, a three-position ringer volume selector, and a high-voltage neon message waiting lamp.

Removable full-surface faceplate designed for custom hotel layout printing
Three-stage ring volume selector offering high, low, and mute settings
Universal 80V neon message waiting indicator matching modern PABX platforms
Dedicated hotline version IQ283BN without dial keypad for direct emergency dial

Interquartz IQ330 and IQ332 enterprise desk and wall telephone series

The Interquartz IQ330 and IQ332 models provide dependable POTS communications for rigorous enterprise office environments and dispatch desks. Rugged polymer housing, durable keypad contacts, and direct wall mounting ensure uninterrupted long-term voice operations.

Reinforced polymer housing suitable for both desk placement and wall brackets
Wear-resistant numeric keypad providing positive tactile feedback upon dialing
Ten direct memory buttons and dedicated headset connection port on the IQ332
Broad compatibility with enterprise analogue PBX extensions and switchboards

Interquartz IQ333 and IQ333EHS handsfree speakerphones with headset port

Interquartz IQ333 and IQ333EHS handsets feature a full-duplex handsfree speakerphone and dedicated headset jack. Built-in Electronic Hookswitch circuitry enables users to answer and disconnect calls directly using wireless headset controls without mechanical lifters.

Integrated EHS interface matching wireless headsets from Poly and Jabra
Acoustic full-duplex speakerphone delivering clarity for conference calls
Permanent EEPROM memory storing directory numbers without battery dependence
Dedicated online indicator socket supporting visual call status beacons

Interquartz IQ50 and IQ50N compact hotline and emergency telephones

The Interquartz IQ50 and IQ50N models feature a compact Slimline profile engineered for installation in confined spaces. These units are widely chosen for elevator compartments, security checkpoints, service corridors, and direct emergency hotline connections.

Narrow Slimline profile suitable for elevator cabins and restricted stations
Hotline variant IQ50N without numeric keypad for immediate autodial links
Prominent visual incoming call lamp assisting personnel in noisy workshops
High tolerance to mechanical vibration and reliable operation on long loops

Interquartz IQ8830 rugged industrial IP65 wireless DECT handsets

The Interquartz IQ8830 wireless handset is engineered for industrial workshops, warehouse logistics facilities, and hospital campuses. Its sealed rugged enclosure with IP65 ingress protection safeguards sensitive electronics against airborne dust, water, and drops.

Rugged enclosure built to IP65 rating against industrial dust and jets
High-definition audio performance on G.722 codec with noise cancellation
Color 2-inch graphical display coupled with backlit keypad buttons
Wireless connection for communications headsets and silent vibrator alerts

Manufacturing heritage, engineering standards, and production infrastructure

Established in 1981, Interquartz has evolved as a respected designer and manufacturer of high-reliability telecommunications terminal hardware.

Working alongside International Quartz Limited facilities established in 1976, the brand has delivered over one million telephone handsets to government agencies, enterprise campuses, and hospitality venues internationally.

Interquartz terminals are engineered for continuous operational cycles across corporate offices, healthcare centers, and hospitality guest rooms.

Each unit integrates resilient keypad switches, protective circuit board coatings, and robust polymer housing components built to maintain mechanical integrity under heavy daily utilization.

Integrated Electronic Hookswitch protocol for modern headset workstations

The Interquartz IQ333EHS and IQ750EHS series incorporate built-in Electronic Hookswitch (EHS) interface circuitry to interface with cordless headsets.

This integration eliminates the requirement for mechanical handset lifters, enabling dispatchers and call handlers to answer and terminate calls directly using button controls on Poly and Jabra headsets.

Connection via the dedicated EHS jack maintains streamlined desk ergonomics, prevents wear on moving cradle assemblies, and ensures consistent electrical signaling. An additional on-line indicator port provides visual status monitoring for neighboring staff during active conversation periods.

Non-volatile EEPROM memory architecture eliminating battery dependencies

A primary engineering advantage of Interquartz enterprise telephones is the implementation of non-volatile EEPROM memory chips for rapid directory storage.

Unlike conventional consumer telephones that require dry cell batteries, Interquartz memory operates independently of external power reserves, preserving directory entries even during extended PBX disconnection.

This architecture eliminates the hazard of sudden telephone directory loss during scheduled maintenance shutdowns while preventing corrosive chemical leakage from depleted batteries, substantially reducing ongoing technical servicing expenses across enterprise deployments.

PBX line interface compatibility and calibrated flash timing adjustments

Interquartz handsets provide direct compatibility with standard analogue POTS extension loops across enterprise PABX platforms from diverse global manufacturers.

An adjustable timed break recall switch (Flash Time: 100/300/600 ms) allows engineers to match the instrument to specific loop disconnect requirements of host telecom switches.

An integrated universal message waiting lamp supporting high-voltage neon signaling (80V neon) and reverse polarity indication ensures dependable visual notification of incoming voicemail across legacy and modern telecommunication platforms alike.

Custom faceplate options and versatile installation across hospitality spaces

The Interquartz IQ283 series features a full-surface clear protective overlay beneath which printed inserts detailing hotel branding, service icons, and direct-dial extensions can be placed.

This configuration shields printed artwork from rubbing wear, moisture, and chemical cleaners during recurring room housekeeping procedures.

The versatile base structure permits horizontal desk positioning or direct vertical wall mounting without purchasing supplementary bracket adapters, simplifying hospitality room rollouts and optimizing nightstand bedside space for guests.

Rugged IP65 ingress protection and industrial DECT wireless coverage

The Interquartz IQ8830 industrial wireless handset is engineered for harsh working conditions within manufacturing facilities, logistics hubs, and transportation depots.

Sealed housing seals achieve IP65 ingress protection, preventing damage from airborne factory dust and direct pressurized water spray.

Digital adaptive noise cancellation algorithms paired with G.722 wideband audio processing guarantee intelligible speech transmission in high-noise acoustic environments surrounding operating metalworking machinery, industrial compressors, and forklift fleets.

Interquartz and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Interquartz and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.