Modern Voice Without Replacing Your PBX

Extend the life of your on-premise phone system with SIP trunking that’s scalable, cost-effective, and cloud-ready – without disrupting existing infrastructure.

*Preserve your investment. Unlock modern call quality, flexibility, and failover-all through your current PBX

Bridge Legacy Systems to the Cloud with PBX Trunking

WiLine’s PBX Trunking service connects your existing PBX to the internet using SIP trunks, delivering enterprise-grade voice quality, lower telecom costs, and a clear path to full cloud migration. It’s the ideal hybrid model for businesses that want to modernize gradually without ripping out legacy systems. You retain control of your PBX and phones, while gaining access to cloud-native reliability, scalability, and redundancy-provisioned and supported by the same experts behind WiLine’s carrier-grade core network.

Why Businesses Choose WiLine PBX Trunking

Keep your on-prem PBX and extend its capabilities using SIP trunks, ideal for businesses not ready for full VoIP migration.

Continue using your current phone systems and configurations while enabling modern voice routing and management.

WiLine trunks come with automatic call rerouting and network-level redundancy, so you’re covered during outages.

Replace expensive PRI and analog lines with SIP-based connectivity for measurable cost savings and streamlined operations.

Reach Out to a Voice Specialist

*We’ll help you connect your PBX to the cloud, without disrupting business continuity.

Connect Legacy PBX to the Cloud with SIP Trunks

WiLine PBX Trunking enables you to connect your in-house PBX system to the PSTN over IP-simplifying voice traffic management while supporting high call quality.

This allows for feature-rich calling and centralized routing control without losing hardware investments.

*Let us help you evaluate your PBX setup and plan your migration – at your pace, on your terms

Cloud Scalability, On-Prem Stability

Instantly scale capacity to meet seasonal demand, open new locations, or support evolving call volumes – without onsite upgrades or new wiring.

You manage growth dynamically, without waiting on a telecom install.

*Let us help you evaluate your PBX setup and plan your migration – at your pace, on your terms

Remote Site and Branch Office Support

Extend your centralized PBX functionality across remote or multi-location environments, no separate voice carriers or systems required.

Call flow stays consistent across offices, and management stays centralized.

Web-Based Control Panel and Monitoring

Gain visibility into trunk usage, call flow, and failover activity through a single browser-based interface.

Configure routing, monitor performance, and manage provisioning – all from one place.

I can't say enough about WiLine Networks, Inc. Our office phone system did not work late one afternoon and WiLine was able to check our system by the next morning. They were able to get our phone system up and running that day. Thank you WiLine for ALL of your help!

Victoria Llama
Office Coordinator, Nisei Week Foundation

With WiLine you'll get:

Unmatched Speed: Ultra-fast connectivity
Guaranteed Reliability: 100% uptime.
Instant Scalability: Seamless growth.

*Tell us what you need to protect - we’ll help you cover it all from edge to endpoint.

Rodeo Drive Women’s Health Center: Redundancy That Never Misses a Beat

Inland Building Construction Companies: Construction Supercharged with WiLine

What Sets WiLine PBX Trunking Apart

Designed for Hybrid Voice Environments

Support legacy hardware today and cloud expansion tomorrow, WiLine’s solution fits wherever you are in your migration journey.

Built-In Disaster Recovery

Automated call rerouting and network-level failover ensure voice continuity – even during ISP or equipment failures.

Quick and Easy Provisioning

Deploy new trunks fast, with minimal impact to operations, WiLine handles configuration, testing, and activation.

Compatible with SIP-Enabled PBX Systems

No need to overhaul infrastructure – our SIP trunking works with most modern PBX models. WiLine’s team confirms compatibility before deployment.

Solving Real-World Voice Infrastructure Challenges

High Costs from Analog or PRI Lines

Traditional telecom lines are expensive and inflexible. WiLine’s SIP trunks replace them with scalable, cost-effective voice paths that align with usage and growth.

Lack of Visibility Into Call Activity

Gain real-time insights into call flow, performance, and trunk usage via a centralized web-based dashboard, no extra software required.

Difficulty Scaling During Growth or Seasonality

Need to add voice capacity quickly? WiLine lets you scale trunks up or down instantly, without provisioning delays or physical installs.

Unreliable Legacy Voice Systems

With automatic failover and QoS, WiLine ensures your calls stay live, even during network interruptions or maintenance windows.

Roadblocks to Cloud Migration

PBX Trunking supports a gradual migration to cloud communications, so you can modernize at your pace, without sudden infrastructure changes.

Managing Multi-Site Communications Separately

Extend your centralized PBX infrastructure to all remote and satellite offices with a unified voice environment, streamlined, secure, and carrier-managed.

PBX Trunking Capabilities

Feature

WiLine PBX Trunks

SIP Trunking

Cloud voice path for your on-prem PBX-no analog lines required

Hybrid Deployment Support

Maintain existing PBX while gaining cloud-based features and routing

Built-in Redundancy & Failover

Automatic call rerouting in case of outages or network issues

Scalable Call Capacity

Add/remove call paths based on usage or seasonality

Remote & Multi-Site Integration

Extend PBX voice to branch offices via SIP

Cost-Effective Voice Routing

Lower your monthly telecom costs vs. legacy PRI or analog lines

Web-Based Call Management

Real-time visibility and control via a centralized online interface

Fast Provisioning

Rapid deployment with minimal business disruption

WiLine PBX Trunks

SIP Trunking

Cloud voice path for your on-prem PBX-no analog lines required

Hybrid Deployment Support

Maintain existing PBX while gaining cloud-based features and routing

Built-in Redundancy & Failover

Automatic call rerouting in case of outages or network issues

Scalable Call Capacity

Add/remove call paths based on usage or seasonality

Remote & Multi-Site Integration

Extend PBX voice to branch offices via SIP

Cost-Effective Voice Routing

Lower your monthly telecom costs vs. legacy PRI or analog lines

Web-Based Call Management

Real-time visibility and control via a centralized online interface

Fast Provisioning

Rapid deployment with minimal business disruption

Transparent, Value-Driven Pricing

Smarter Infrastructure. Lower Costs. More Value.

Custom Configuration

WiLine’s pricing is designed to deliver meaningful savings over traditional providers.

WiLine has the power to operate more efficiently, passing those savings directly to our customers.

We ensure you get enterprise-grade performance without the enterprise-grade markup.

*Transparent, tailored pricing delivered to your inbox instantly.

Industries WiLine PBX Trunks Excels At

Enterprises with Legacy PBX

Modernize voice without disrupting existing systems, add SIP trunks for hybrid, future-ready voice.

Multi-Site Businesses

Centralize voice infrastructure across branches with scalable, cost-effective SIP connectivity.

Call-Heavy Environments

Scale call paths instantly for high volume scenarios without ordering new circuits or dealing with carrier delays.

IT Teams Mid-Migration

Bridge on-prem to cloud at your own pace, without ripping and replacing your PBX overnight.

Resources for WiLine's Communication Services

Understanding POTS: Its Role and Transition in Today’s Business Landscape

Learn more

You Should Be Shifting Away From POTS Lines

Learn more

Navigating Unified Communications as a Service: Your Path to Efficient Communication and Collaboration

Learn more

Learn How an MSP May Be The Ideal Solution For Your Properties

Learn more

Been using the service for two months now and we are very happy with the bandwidth. It is truly symmetrical. The price is more reasonable than other business service providers. We have also been pleased with the quick and thorough response to service requests.

John Christensen

Sacramento Media Sector

Never face infrastructure headaches again.

Wiline is built to erase your toughest challenges, from unpredictable costs to frustrating downtime.

Why Choose WiLine

Modern Voice Without Replacing Your PBX

Bridge Legacy Systems to the Cloud with PBX Trunking

Why Businesses Choose WiLine PBX Trunking

Connect Legacy PBX to the Cloud with SIP Trunks

Cloud Scalability, On-Prem Stability

Remote Site and Branch Office Support

Web-Based Control Panel and Monitoring

With WiLine you'll get:

What Sets WiLine PBX Trunking Apart

Designed for Hybrid Voice Environments

Built-In Disaster Recovery

Quick and Easy Provisioning

Compatible with SIP-Enabled PBX Systems

Solving Real-World Voice Infrastructure Challenges

PBX Trunking Capabilities

Transparent, Value-Driven Pricing

Smarter Infrastructure. Lower Costs. More Value.

Custom Configuration

Industries WiLine PBX Trunks Excels At

Enterprises with Legacy PBX

Multi-Site Businesses

Call-Heavy Environments

IT Teams Mid-Migration

Resources for WiLine's Communication Services

Understanding POTS: Its Role and Transition in Today’s Business Landscape

You Should Be Shifting Away From POTS Lines

Navigating Unified Communications as a Service: Your Path to Efficient Communication and Collaboration

Learn How an MSP May Be The Ideal Solution For Your Properties

FAQ

What is PBX Trunking, and how does it work?

Never face infrastructure headaches again.

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