Mircom Intercom Repair:
TX3, TX3 Touch, IS-Series, KV Legacy.
Mircom is a Canadian voice-entry manufacturer with a long NYC multi-tenant install base, lobby panel and apartment station both. We service the full Mircom intercom roster: TX3 reinforced electronic directory lobby panels, TX3 Touch digital directory, IS-series 4-wire suite stations on the MA-485A amplifier, KV-series legacy audio lobby panels, and the MiVoIP cloud VoIP migration path for buildings losing their POTS line.
Where Mircom Lives in NYC
Mircom has deep roots in NYC multi-tenant voice entry, lobby panel and apartment station both. The current spec in new installs and major upgrades is the TX3 Touch digital directory with an HD web camera and provision for a built-in IP camera, paired with IS-series suite stations in the apartments on the 4-wire bus driven by the MA-485A amplifier. For buildings keeping an existing paper directory or an all-audio footprint, TX3 reinforced electronic directory panels and the legacy KV-series vandal-resistant lobby panels are both still in the catalog and still fully supported.
The migration story in NYC right now is POTS sunset. Verizon and the other carriers are retiring copper POTS lines that older TX3 panels used for the dial-out to a tenant phone. Mircom's answer is MiVoIP, a cloud VoIP service that routes TX3 calls over IP, so the panel keeps working without a dial-tone pair. The apartment side, IS-series on a 4-wire riser, does not touch POTS and is unaffected.
The Mircom Intercom Catalog
Lobby panels, suite stations, the amplifier bus that ties them together, and the cloud VoIP migration.
TX3 Reinforced Electronic Directory Voice Entry
TX3 lobby panels with an 8-line backlit LCD for electronic directory lookup, built-in postal lock provision, color camera, and a reinforced stainless-steel face for exterior use. Supports up to 2000 occupants per panel. The mid-tier spec in NYC between paper-directory TX3 and the full touch screen variants.
TX3 Touch Digital Directory
Flagship touch screen video intercom. 15 inch and 22 inch glass face, HD web camera, provision for built-in IP camera and postal lock. Customizable layouts for building branding, promotional slides, and tenant group views. Pedestal, kiosk, surface, and flush mount variants. TX3-T10 covers the compact 10 inch footprint for small lobbies.
IS-Series 4-Wire Suite Stations
Resident-side apartment stations on a 4-wire bus. No POTS dependency, no cellular dependency, no monthly carrier bill. Fits new or existing buildings with standard 4-wire riser. The IS-489 single-gang station is the common new install; IS-401B horizontal and IS-51-3 vandal resistant handle specific wall layouts and higher-abuse locations. IS-102 for office variants.
MA-485A Apartment Intercom Amplifier
Central audio amplifier that drives the 4-wire IS-series suite station bus from the lobby panel. Precision amplifier circuits with automatic level control for voice intelligibility across long risers. Built-in timed door release, silent door release, and post-office release outputs. One MA-485A anchors the whole audio side of a Mircom intercom install.
KV-Series Vandal-Resistant Lobby Panels (Legacy Audio)
Classic audio-only lobby panels for buildings running the Mircom legacy multi-tenant architecture. Aluminum alloy construction, metal call buttons, poke-resistant speaker grill, 16 AWG steel speaker cover. Variants for 12, 24, and 36 apartments. Still an active catalog line; still a valid repair-and-keep choice when a building wants to extend the life of its existing audio riser rather than cut over to TX3.
MiVoIP Cloud VoIP POTS-Sunset Migration
Mircom's cloud VoIP service for TX3 lobby panels. Replaces the carrier POTS line requirement with IP routing through Mircom's cloud, so the TX3 keeps dialing tenants without a copper dial-tone pair. The migration path for every NYC building affected by Verizon's POTS retirement. Pairs with MiConnect, MiEntry, and MiVision for admin and mobile credential.
What We See in the Field
Mircom field work splits across POTS sunset, IS-series bus faults, TX3 Touch display and firmware, and KV legacy aging.
TX3 panel loses dial-out after POTS line retirement
Carriers across NYC are retiring the copper POTS pair that older TX3 panels dialed tenants on. The panel still powers up, the directory still displays, but calls do not complete. We cut the panel over to MiVoIP, verify tenant dial-out, and label the cloud routing for the super.
Affects: TX3-120, TX3-2000, TX3 Touch installs on retired copper
IS-series suite station silent on the MA-485A bus
A single apartment goes silent while neighbors stay fine. Usually a dead station, a disturbed 4-wire pair in a junction, or an occasional MA-485A port fault. We trace the bus, swap in a replacement IS-489 or IS-401B as needed, and verify the lobby-to-station audio path end to end.
Affects: IS-489, IS-489-1, IS-401B, IS-51-2, IS-51-3 on MA-485A
TX3 Touch display or firmware fault
The 15 or 22 inch glass face stops responding to touch, boots into a black screen, or hangs on the Mircom splash after a firmware push. Recovery is a controlled reboot, a firmware re-flash with a known-good image, and a factory recalibration of touch input. For brick cases we swap the touch module.
Affects: TX3-TOUCH-S15, TX3-TOUCH-F15, TX3-TOUCH-S22, TX3-T10
TX3 Touch directory drift
Over years of turnover, the digital directory on a TX3 Touch panel drifts out of sync with the actual tenant roster. We re-sync against the current rent roll, verify dial-out routing per tenant, and label a maintenance procedure the super can run so the directory stops drifting.
Affects: TX3-TOUCH-S15, TX3-TOUCH-F15, TX3-TOUCH-S22, TX3-TOUCH-F22
MiVoIP registration drop after network change
A MiVoIP-equipped TX3 depends on a stable IP path from the lobby panel to Mircom's cloud. ISP router swaps, switch replacements, and firewall rule changes break registration. Panel goes silent, visitors cannot reach tenants. We reauthenticate the panel, verify outbound rules, and set a static reservation so the next network change does not break it again.
Affects: TX3 panels on MiVoIP
KV-series lobby panel aging
The KV aluminum lobby panel takes decades of weather, scratched buttons, and dented speaker covers. The electronics are usually still fine; the faceplate and buttons are the failure point. We replace faceplates and call buttons on the existing housing when stock allows, or recommend a controlled cutover to TX3 when the panel is past faceplate repair.
Affects: KV-12, KV-24, KV-36 in service past 20 years
The Service Specifics
Mircom is the Mircom Group of Companies, a Canadian commercial fire, communications, and voice-entry manufacturer headquartered in Vaughan, Ontario, in business since 1991. The product lines reach NYC through a dealer distribution channel and have long been the voice-entry choice for mid-size multi-tenant residential across the five boroughs and northern New Jersey.
Mircom intercom admin is on-panel for most TX3 setup; the Mircom cloud services layer (MiVoIP, MiConnect, MiEntry, MiVision) is opt-in rather than mandatory. A building can run the TX3 fully on-panel, or route calls through MiVoIP for POTS-sunset migration, or add MiConnect and MiEntry for mobile tenant credentials and remote admin. The IS-series apartment side runs independent of all of that on the 4-wire bus.
The Legacy Install Base
Pre-TX3 Mircom intercom still runs in many NYC buildings. The classic architecture is a KV-series lobby panel on a 4-wire riser driving IS-series suite stations through an MA-485 series amplifier. Mircom still catalogs every part of that chain, so legacy repair is a parts-in-hand job, not a forced upgrade.
Pre-TX3 KV-series audio lobby panels
Older KV panels installed before TX3 became the spec. Still catalog parts; faceplate, call-button, and speaker-cover replacements keep them running. We repair in place when the housing is sound and recommend a planned TX3 upgrade only when the structure is past repair.
Earlier IS-series and Urmet 1150 handsets
Legacy apartment handsets on the 4-wire bus. The current IS-series drops into the same wiring, and the Urmet 1150 Mircom distributes is a direct-fit audio handset for older risers. Both let a building replace failing units one at a time without re-wiring the apartment.
MA-485 (non-A) amplifiers
Pre-MA-485A amplifiers still driving IS-series buses. The current MA-485A is a drop-in upgrade on the same wiring footprint when the older unit fails.
If Your Specific Problem Is...
For a specific Mircom symptom.
Telephone Entry Repair
TX3 or legacy telephone-entry panel failures including POTS retirement and MiVoIP migration.
Telephone-entry repair → 02 / SymptomApartment / Multi-Tenant Repair
KV, TX3, or TX3 Touch multi-tenant intercom failures across the full riser.
Multi-tenant repair → 03 / SymptomHandset / Station Replacement
IS-series or Urmet 1150 handset replacement on the MA-485A bus.
Station replacement →Mircom Repair FAQ
Mircom Install Need Service? We Keep It Running.
TX3, TX3 Touch, IS-series, MA-485A, KV legacy. POTS-to-MiVoIP migration handled. Licensed and insured.