Overlay Services
Our STACK™

Overlay

Intelligent capabilities that enable performance, security, and communication across your network.

Kick Every Connection Up a Notch

The Overlay layer adds intelligence to connectivity — controlling how traffic flows, how applications perform, and how security is enforced across environments.

Cloud & Communication

UCaas

UCaaS

Integrated calling, messaging, and collaboration

Contact Center

Contact Center

Customer engagement and call routing

VoIP Calling

VoIP Calling

Cloud-based voice delivery

Teams Calling

Teams Calling

Microsoft Teams voice enablement

SIP Trunking

SIP Trunking

Legacy-to-cloud voice connectivity

Number Reputation Management

Number Reputation Management

Trusted outbound caller identity

Network Control & Security

SD-WAN

SD-WAN

Application-aware routing and failover

SASE

SASE

Consistent security policy enforcement across users and locations

Firewall and Threat Protection

Firewall and Threat Protection

Continuous enforcement at the edge

Performance Optimization

Performance Optimization

Latency, jitter, and packet loss reduction

LAN and WiFi

LAN and WiFi

Local access and user experience

Edge Power and Device Control

Edge Power and Device Control

Remote visibility and remediation

Built for Today’s Business Needs

NHC helps organizations layer modern communication, security, and performance technologies over the connectivity they already depend on.
Experience deploying edge technologies across distributed environments
Strong ecosystem of leading technology providers
Proven architectures for performance, security, and communication enablement
Designed to integrate across diverse connectivity environments

Why NHC?

Many organizations deploy Overlay technologies but struggle to achieve consistent outcomes. NHC integrates those capabilities into a broader architecture aligned to business needs. With NHC, Overlay provides:
Overlay enables capability — NHC ensures those capabilities perform.
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We sell a significant amount of UCaaS, and our deployments with NHC have consistently been smoother, faster, and more accurate than with other providers we have worked with. After installation, our customers also appreciate how easy and intuitive the newVoice portal is to navigate. And whenever assistance is needed, NHC’s team is always just a phone call away.”

Glenn Mack

CEO of Level Technologies

Our STACK™ Vendors

…and many more

A woman smiles while using a tablet at night in a softly lit room. She has a pencil behind her ear and wears a casual sweater, with blurred city lights visible in the background.
The Complete Picture
Overlay provides control — but the Managed layer ensures those capabilities deliver results.

Enable a Smarter STACK™

The Overlay layer builds on Network to add intelligence, control, and consistency across the environment.
Network connects
Overlay enables
Managed enables outcomes

Add Intelligence and Control to Your Network

Enable consistent performance, security, and user experience across every connection.