Field service first
MD3 is built for companies that still depend on working systems in real buildings. We focus on what needs to work on-site without adding unnecessary complexity.
MD3 Communication Service, Inc.
Business phone, cabling, and security support in NYC & NJ.
Keep your business connected with local installation, repair, and support for phone systems, network cabling, intercoms, access control, and CCTV.
Current Service Focus
Panasonic PBX, SIP trunk, and cabling support for active business sites.
MD3 is currently helping NYC and New Jersey businesses keep legacy phone systems running, connect SIP trunks, and improve office or warehouse cabling for phones, Wi-Fi, cameras, and access systems.
NCP1000, TDE200, feature codes
Panasonic PBX Support
Support for existing Panasonic PBX environments, SIP trunk setup, and SMDR / CDR call detail dashboard work.
Office and warehouse coverage
Network Cabling
CAT5e/CAT6, PoE paths, Wi-Fi access points, cameras, phones, patch panels, and equipment-room cleanup.
Legacy PBX and IP PBX
Business Phone Systems
Troubleshooting, programming, moves, adds, changes, replacement planning, and practical upgrade support.
Since 2005
Operating as MD3
20+ years
Company experience
NYC + NJ
Primary coverage
AVAYA / Panasonic / NEC
Legacy brands supported
Why MD3
Clear help for the systems that cannot stay down.
MD3 keeps the message simple: phones, cabling, intercom, access, and cameras, supported on-site across NYC and New Jersey.
Comfort with legacy environments
We support digital PBX, IP PBX, mixed vendor environments, upgrades, moves, adds, changes, and replacement planning without pushing unnecessary replacement.
Security and communications together
Phones, cabling, intercom, access, and CCTV often affect the same daily workflow. We design them to support each other instead of living as disconnected systems.
Services
Choose the system that needs attention.
Each page explains what MD3 handles and when that service is the right fit.
01
Legacy PBX, IP PBX, on-site support
Business Phone Systems
Installation, repair, programming, SIP trunk support, moves, adds, changes, and practical upgrade planning for AVAYA, Panasonic, NEC, Toshiba, and other business phone environments.
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02
CAT5e, CAT6, PoE, office and warehouse coverage
Network Cabling
Structured cabling, data drops, phone/data wiring, patch panel cleanup, and network-ready paths for phones, cameras, access points, intercoms, and warehouse coverage.
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03
Entry communication, video upgrades
Building Intercom Systems
Tenant entry panels, lobby stations, video intercom upgrades, and building communication systems designed for easier visitor management.
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04
Credentialed entry, logs, local or cloud
Door Access Control
Door access setups for offices, restaurants, and multi-tenant properties with clearer accountability, easier access management, and dependable day-to-day operation.
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05
Installation, upgrade, troubleshooting
CCTV & Surveillance
Camera planning, recorder replacement, coverage expansion, outage troubleshooting, and practical surveillance support for active facilities.
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Software + AI In Progress
Software for the work around the call.
Through DigiPBX, MD3 is developing softphones, AI voice tools, secure access, and custom systems that connect calls with customer records and follow-up.
- Windows and Android softphone development now in progress
- AI voice workflows for answering, routing, and collecting caller details
- Built around real live-system conditions, not just abstract demos
How MD3 Works
How a job usually moves forward.
01
Assess the live environment
We review the system, the site, and the operational issue before recommending changes.
02
Scope the practical fix
We align the solution to the building, system age, workflow, and budget instead of pushing a generic package.
03
Install, repair, and support
We complete the work cleanly, confirm performance on-site, and stay available for future support.
Next Step
Need help with a live system issue?
Tell MD3 what system you have, what is failing, and where the site is located. We will confirm whether the job fits our coverage and what the next step should be.