Reliable Voice Connectivity for Existing PBX Environments

Inteltel PRI Trunking helps organizations maintain dependable business voice services while protecting existing PBX investments and creating a controlled path toward modern communications.

Benefits

Inteltel PRI Trunking is designed for organizations that need to maintain existing PRI-based PBX systems and traditional voice infrastructure while continuing to support reliable business calling.

Protect Existing PBX Investments

Continue using compatible PBX and telephony infrastructure while avoiding unnecessary or premature replacement costs

Maintain Reliable Business Voice

Support business-critical calling for locations and applications that continue to depend on traditional PRI connectivity.

Reduce Migration Risk

Modernize communications gradually, allowing locations, users, and applications to transition without requiring an immediate enterprise-wide migration.

Control Modernization Costs

Align communications upgrades with technology lifecycles, budgets, business priorities, and operational requirements.

Support Hybrid Voice Environments

Operate PRI alongside SIP Trunking, Cloud Calling, Hosted PBX, and Unified Communications, providing flexibility during technology transitions.

Create a Path to Modern Communications

Establish a structured migration strategy from traditional PBX and PRI services toward scalable IP- and cloud-based communications

Why Choose Inteltel?

Communications Transformation in Action

Rather than requiring an immediate transition to cloud communications, PRI service enables enterprises to protect existing telephony investments, maintain established calling environments, and modernize voice infrastructure on a timeline aligned with business requirements.

Maintain Existing PBX Systems

Extend the useful life of compatible PBX infrastructure without forcing an immediate replacement.

Support Business-Critical Voice

Provide dependable connectivity for locations and applications that continue to rely on traditional PRI interfaces.

Control Migration Risk

Allow organizations to transition locations, users, or applications gradually rather than performing a disruptive enterprise-wide migration.

Bridge Traditional and Modern Communications

PRI can remain part of the communications environment while other locations transition to SIP Trunking, Cloud Calling, Hosted PBX, UCaaS, or Unified Communications.

What Sets Us Apart?

Dedicated Access for Your PBX

Inteltel PRI Trunks provide dedicated voice connectivity for compatible PBX environments, enabling organizations to maintain established telephony systems while connecting locations to reliable enterprise voice services. Inteltel helps organizations protect existing technology investments, manage communications costs, maintain business continuity, and establish a controlled path toward modern IP and cloud communications

A managed transition from legacy voice access to IP applications

CUSTOMER-MAINTAINED

PBX

Existing voice systam

01

IAD

ACCESS DEVICE

PRI terminaion

02

eMTA

SWITCH

SIP handott

03

DOCSIS 2/3

PACKETCABLE

Voice transport

04

CABLE

HEADEND

Network acoess

05

INTELTEL

BACKBONE

IP connecávity

06

APPLICATION

SERVERS

Voice services

07

Capabilities

Extend the Value of Your Existing Voice Infrastructure

PRI trunks continue to support organizations that depend on established voice systems, dedicated connectivity, or consistent access to essential phone services.

Hospitals, government, and emergency services

Support voice communications where reliability and continuity are critical.

Businesses with legacy PBX systems

Keep existing phone infrastructure connected while planning a gradual modernization.

Locations with limited internet connectivity

Maintain voice service where broadband is unreliable or does not support a dependable SIP connection.

Fax, alarm, and elevator lines

Connect equipment that may rely on dedicated or specialized telephone service.

A PRI trunk connects your PBX to Inteltel’s voice network through a voice gateway. From there, calls are routed to and from the public switched telephone network (PSTN), enabling your business to make and receive calls using its existing phone system.

Ready to modernize your voice environment

We evaluate PBX systems, PRI circuits, calling requirements, resiliency needs, and cloud readiness to build a practical roadmap that the PBX supports PRI and that its interface matches the service handoff. Configure the correct signaling standard, framing and line coding, then set the D-channel, trunk group, dial plan, caller ID, and inbound number routing. Coordinate the settings with your voice provider and test inbound and outbound calls before moving users to the trunk.

How It Works

How do I configure a PRI on a PBX?

PRI provides a dedicated digital connection between the PBX and the gateway. Inteltel can also help plan call continuity options, such as alternate routing, to keep calls reaching your business during a service disruption.

Transaction toward SIP, Cloud calling, and unified communications

Inteltel PRI trunks are designed to provide a cost-effective and reliable voice service for your ISDN PRI-enabled PBX equipment. Below are some key considerations and interface requirements for a successful implementation for the PBX administrator and IT/network team.

COMPLEMENTARY SERVICES

Unified Communications with RingCentral

Cloud Communications. Simplified Deployment. AI-Enhanced Collaboration

Unified CX with RingCentral

AI-Powered Customer Engagement. One Connected Cloud Experience.

Unified Communications with Webex

Secure Collaboration. Integrated Voice. Connected Experiences.

Unified Communications for Hospitality

Connect Staff. Enhance Guest Experience, Simplify Hotel Communications.

Cloud Calling for Microsoft Teams

Extend Microsoft Teams with Enterprise Cloud Voice.

READY TO MODERNIZE YOUR NETWORK?