Physical & Network Layer Engineering

Uncompromising Infrastructure. Practical Deployment.

Whether we are co-managing your existing office network alongside your IT team, bridging a legacy phone system to reduce monthly carrier spend during your transition, or deploying brand-new desk and cordless phones, we make sure your physical equipment and your cloud phone system work as one.

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In Plain English • Why This Page Matters

Why Your Network and Phones Must Work Together—And How We Protect Your Hardware Budget

Most frustration with modern internet phones happens for two simple reasons: either a provider forces you to throw away working phones you already paid for, or they plug new phones into an unconfigured office network where heavy computer traffic crowds out your phone calls.

1. Keep Compatible Phones: If you already own unlocked business IP phones in good condition, we can often reprogram them to work on NEXUS™ so you don't buy hardware twice.

2. Give Voice a Priority Lane: We coordinate with your IT provider (or manage your switches and firewall) so phone calls always get priority over large file downloads and video streaming.

3. Protect Specialty Lines: From fire alarms and elevators to fax machines and hotel/resident room phones, we provide the exact adapter or certified continuity box required.

Pillar 01 • Desk, Cordless & Paging Endpoints

1. Preferred Endpoints & SIP Reprovisioning Policy

The NEXUS™ Preferred Stack: For new deployments or infrastructure upgrades, we standardize on enterprise-grade endpoints from Poly® and Grandstream® (alongside Algo® and Snom® for high-output warehouse horns, intercoms, and visual alert strobes). These devices are rigorously tested on our core network to deliver high-definition audio, zero-touch provisioning, and deep feature integration.

Capital Preservation & Hardware Reprovisioning: Already heavily invested in physical telecom hardware? We protect your bottom line. Our technical staff may be able to securely reprovision your existing standard, unlocked SIP hardware (including Poly® / Polycom®, Grandstream®, Algo®, Yealink®, Cisco®, Snom®, Mitel®, or Fanvil®) to the NEXUS™ environment (standard setup, testing, and configuration charges apply).

Pillar 02 • Non-Critical Continuity & Phased Bridges

2. NEXUS AC™ — Analog Bridges, Hospitality ATAs & Fax

Room & Resident Analog Phones: Hotels, assisted living, memory care, and multi-unit facilities don't need expensive IP desk phones in every room. We deploy high-density Grandstream® FXS Analog Gateways to power dozens or hundreds of existing guest/resident room phones and physical fax/MFP machines.

Transitional PBX Trunk Bridges: Where a business is paying steep legacy rates for aging copper or PRI circuits, transitioning to a NEXUS AC™ Analog Trunk Bridge under a multi-year Hosted PBX agreement (where your existing phone system, such as an Avaya® Partner or legacy PBX, has compatible analog trunk handoff ports) can often reduce monthly carrier spend immediately—helping free up budget while we methodically stage your internal network or cabling upgrades at a comfortable pace.

Pillar 03 • Code-Compliant Life-Safety POTS Replacement

3. NEXUS AC™ — Critical Life-Safety Continuity

Code-Certified Life-Safety: When deployed for Fire Alarm Panels, Elevator Phones, Commercial Intrusion Alarms, Area-of-Refuge Intercoms, or Emergency Pool/Gate Call Boxes, NEXUS AC™ — Critical utilizes purpose-built, code-certified multi-carrier dual-SIM cellular + WAN continuity hardware engineered to support NFPA 72, ASME A17.1B, and UL 864 compliance with integrated multi-hour battery backup.

Available as a standalone POTS replacement service or bundled alongside any NEXUS™ voice tier.

Pillar 04 • LAN, Firewall & Productivity Stack Harmony

4. Meraki® / UniFi® Co-Management & Stack QoS

Cooperative Control: We eliminate counter-productive finger-pointing between internet providers, IT vendors, and phone companies. We standardize on Cisco Meraki® and Ubiquiti® UniFi® ecosystems for network switching, security gateways, and wireless infrastructure—granting cooperative dashboard access to your internal IT team so you are never locked out of your own network.

Flat or VLAN Networks: While we recommend VLAN segmentation for larger environments, smaller offices often operate efficiently on a straightforward "flat" network. Whether your environment is converged or segregated—with or without VLANs—we configure traffic prioritization so voice coexists smoothly alongside Microsoft® Teams®, Zoom®, Google Meet®, and Amazon Chime®.

Hardware Lifecycle Protection

NEXUS TC™ (Total Care) Lifecycle Assurance

When you upgrade your infrastructure using our preferred hardware stack, your technology investment is protected by our Limited Lifetime Warranty / Replacement (LLW/R) program while your account remains in good standing. If a managed, manufacturer-supported device encounters a hardware defect or fails due to normal operational wear, we replace it directly—no arguing with manufacturers and no hidden replacement fees. As technology evolves and older devices eventually reach their official manufacturer End-of-Life (EOL) status, we keep your workflows uninterrupted by providing structured, heavily discounted upgrade paths to modern endpoints.

For IT Directors, MSPs & Technical Procurement

Technical Architecture & RFP Specification Matrix

Standardized architectural parameters for internal IT security reviews, vendor evaluations, and RFP documentation.

Technical Domain	NEXUS™ Production Specification
Core Switching & Data Center Redundancy	Geo-redundant active-active carrier softswitch clusters anchored in Tier-4 Equinix® facilities across US-West (San Jose), US-Central (Dallas), and US-East (Miami). 99.999% core availability architecture.
Voice Codecs, Transport & Encryption	HD Voice (Opus, G.722, G.711u/a, G.729); SIP over UDP/TCP/TLS 1.2+ signaling with SRTP media encryption available for compliance-sensitive deployments.
Local Network Topology & QoS	Supports converged (flat or 802.1Q VLAN-segmented) and physically segregated voice networks. DSCP EF (46) RTP media tagging and CS3/AF31 SIP signaling prioritization. Co-managed administrative support on Cisco Meraki® and Ubiquiti® UniFi® switching, security gateways, and wireless APs.
Endpoint Provisioning & Compatibility	Zero-touch HTTPS/TLS provisioning on preferred Poly® and Grandstream® IP desk/DECT endpoints, Algo®/Snom® multicast/SIP paging, high-density FXS gateways, and conditional reprovisioning of unlocked third-party SIP endpoints.
Life-Safety & Regulatory Readiness†	E911: Kari's Law (direct 911 without prefix + central notification) & RAY BAUM's Act (dispatchable location routing). NEXUS AC™ Critical: NFPA 72, ASME A17.1B & UL 864 compliant dual-SIM LTE/5G + WAN cellular/analog continuity with integrated battery backup. Messaging & Fax: 10DLC TCR campaign registration & HIPAA-Ready† encrypted digital WebFax™.
Standard Support & Engineering Governance	Standard Operations: Mon–Fri 9:00 AM – 6:00 PM PT (5:30 PM PT daily active intake cutoff). Governed by published Master Terms & SLA Hub (`nexusvoip.io/terms-and-conditions`).

Next Step

Want Us to Check Your Current Phones or Network Readiness?

Tell us what phones or lines you are currently using, and our engineers will let you know what can be reused, bridged, or upgraded.

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