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PROFESSIONAL CAT3 CABLING
Cat3 Telephone & Voice Cabling — Chicago
Traditional phone line wiring, legacy PBX extensions, and intercom cabling for older Chicago homes and commercial buildings.
Need Legacy Telephone Wiring Serviced?
We understand older building infrastructure — call us and we’ll sort out what’s there and what it can support.
CAT3 VOICE CABLING — THE RIGHT CABLE FOR THE JOB
Category 3 (Cat3) unshielded twisted pair is the traditional wiring standard for analog telephone lines and early Ethernet networks. While new data installations use Cat5e or Cat6, Cat3 remains the correct and appropriate choice for analog voice line extensions, legacy key system wiring, and certain intercom and alarm circuit applications — particularly in older Chicago residential and commercial buildings where this infrastructure still runs throughout the walls.
- HD-over-coax upgrades deliver modern camera quality on existing coax runs — no new cabling, far lower cost.
- Properly sized splitters and amplifiers keep signal levels consistent at every drop in the building.
- MoCA networking turns existing coax infrastructure into a Gigabit backbone without pulling new cable.
- Every run properly grounded and bonded — the critical step most DIY coax installs skip entirely.
Cat3 Services
- Telephone Line Extension: Add phone jacks to new rooms or floors using Cat3 — the correct cable for analog voice lines.
- Legacy PBX Wiring: Traditional key system and analog PBX extension wiring — line cards and demarcation points serviced properly.
- Intercom & Doorbell Wiring: Low-voltage 2-pair wiring for intercom systems and doorbell circuits.
- Alarm System Low-Voltage Wiring: Security panel to sensor runs where Cat3 pairs are specified.
- Troubleshooting Existing Cat3: Tracing, testing, and repairing existing telephone wiring in older Chicago buildings.
- Cat3 to Cat6 Upgrade Consultation: We assess your infrastructure and advise when a Cat6 upgrade makes sense — and when existing wiring can be repurposed.
Need Legacy Telephone Wiring Serviced?
We understand older building infrastructure — call us and we’ll sort out what’s there and what it can support.
Talk to us and get a quote
Chicago’s trusted source for technology and power since 1993
- maher@high-power.com
- (773) 617-5070
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