NetLumen CorePBX · IP PBX Communication System
PBX solution for business — IP PBX, cloud or on-premise
Robust IP PBX system for businesses of all sizes. Cloud-hosted or on-premise deployment with enterprise telephony features, SIP trunk management, and unified communications.
Overview
What is a PBX solution?
A PBX (private branch exchange) is the phone system a business runs internally: it gives every desk an extension, routes incoming calls to the right person or team, and connects the office to the public telephone network. A PBX solution is that system together with the features around it — IVR menus, call queues, voicemail and conferencing.
Older offices used a hardware EPABX wired to telephone lines. An IP PBX does the same job over your data network and reaches telephony carriers through SIP trunks, which makes it easier to add users, connect branches and support people working remotely.
NetLumen CorePBX is an IP PBX for businesses of all sizes, available as a cloud-hosted PBX or deployed on your own premises. It includes SIP trunk management, a visual IVR designer, call queues with automatic call distribution (ACD), hunt groups, voicemail to email, conference bridges, extension management and SNMP monitoring.
In plain terms: CorePBX is the office phone system for your company — one business number, an extension for each person, a welcome message for callers, and call transfer between branches or people working from home.
Cloud or on-premise
Run CorePBX as a hosted cloud PBX or install it on your own infrastructure — the same features either way.
Professional call handling
Design IVR menus, queue callers with ACD and ring teams with hunt groups so calls reach the right person.
One system for every branch
Connect multiple offices and remote staff on a single phone system with central extension management.
Built for IT teams
SIP trunk management and SNMP monitoring give administrators control and visibility.
Key Features
Use Cases
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Get a Free DemoFeatures in detail
What CorePBX does, feature by feature
SIP Trunking
SIP trunking connects CorePBX to the telephone network over an internet connection instead of traditional phone lines. A business can manage each SIP trunk from the PBX system itself and add or change calling capacity without rewiring the office.
IVR Designer
The IVR designer lets you build the menu callers hear when they ring your number, with options that route them to the right department. A well-planned IVR means callers reach the correct team sooner and the front desk handles fewer transfers.
Missed Call Service
A customer calls your number and hangs up, and CorePBX logs the call without answering it. Your staff then follow up with a call back, so customers have a simple way to request contact from the business without waiting on the line.
Call Queues & ACD
Call queues hold callers in line when everyone is busy, and automatic call distribution passes each call to the next suitable agent. Callers are answered in a fair order and the workload is shared across the team.
Hunt Groups
A hunt group rings a set of extensions, together or in turn, until someone picks up. Calls to a department are answered by whoever is available, so a customer is not left ringing an empty desk.
Voicemail to Email
Voicemail to email sends each voicemail message to the recipient's inbox. Staff can pick up messages wherever they read their email, which helps people who are often away from their desk phone respond sooner.
Conference Bridges
Conference bridges give your teams a number or extension that several people can dial into for a group call. Meetings with colleagues, branches or customers can be held on your own office phone system without a separate conferencing service.
Extension Management
Extension management is where administrators create, change and remove the extensions assigned to staff and departments. When people join, move or leave, the phone system can be updated from one place to match.
SNMP Monitoring
SNMP monitoring lets CorePBX report its status to network monitoring tools through the standard SNMP protocol. IT teams can watch the phone system alongside the rest of their infrastructure and be alerted when something needs attention.
How it works
From setup to everyday use
- 1
Choose your deployment
Decide whether CorePBX will run as a cloud PBX or on-premise, then connect your SIP trunks and business numbers to the system.
- 2
Create extensions and groups
Add extensions for staff and departments, and organise them into hunt groups and call queues that reflect how your teams answer calls.
- 3
Design your call flows
Build the IVR menus callers will hear and set where each option leads. Set up voicemail to email and conference bridges for the teams that need them.
- 4
Run and monitor
Staff make and receive calls on their extensions as part of the working day. Administrators update extensions as the team changes and keep watch on the system through SNMP monitoring.
Who it is for
Where teams use it
Enterprise Telephony
Larger organisations need one dependable phone system across departments. CorePBX is an IP PBX that brings SIP trunking, IVR, call queues and extension management together, so administrators can run company telephony from a single system.
Remote Work Enablement
Staff working away from the office still need to be reachable on their business extension. As a cloud PBX or on-premise system, CorePBX uses extension management, hunt groups and voicemail to email to keep remote staff connected to callers.
Multi-branch Connectivity
Companies with several branches often end up with a separate PBX system at each site. CorePBX places branches on shared extension management and SIP trunking, so staff can call between locations by extension and join common conference bridges.
Hospitality
Hotels and similar properties rely on phones for the front desk, departments and guest requests. CorePBX provides extension management, an IVR for incoming callers and hunt groups, so calls are answered by whoever is on duty.
FAQ
CorePBX: common questions
What is a PBX solution?
A PBX solution is a business phone system that manages internal extensions and routes external calls, with features such as IVR, call queues, voicemail and conferencing. NetLumen CorePBX is an IP PBX solution available cloud-hosted or on-premise.
What is the difference between an EPABX and an IP PBX?
An EPABX is a hardware exchange connected to traditional telephone lines. An IP PBX carries calls over the data network and connects to carriers through SIP trunks, so it is managed in software and is simpler to extend to new users and locations.
What is the difference between a cloud PBX and an on-premise IP PBX?
A cloud PBX (hosted PBX) runs on servers managed for you and is reached over the internet; an on-premise IP PBX runs on equipment at your site. NetLumen CorePBX can be deployed either way.
Does CorePBX support SIP trunking?
Yes. CorePBX includes SIP trunk management for connecting your phone system to telephony carriers.
Can I build an IVR with CorePBX?
Yes. CorePBX has an IVR designer for creating call menus, along with call queues, ACD and hunt groups for routing.
Is CorePBX suitable for remote and multi-branch teams?
Yes. Remote work enablement and multi-branch connectivity are core use cases: extensions in different locations work as one system.
Does CorePBX support missed call service?
Yes. Missed call service is included in CorePBX, so calls to your missed call number are logged for follow-up.
Solutions built on CorePBX