Ideal for any size enterprise with reliable connectivity and backup facilities.

Onsite PBX Appliance

What is a PBX?

PBX is short for Private Branch Exchange and refers to the system (usually hardware) installed at a business premises that allows a business to connect a single or multiple phone lines to multiple endpoints also known as extensions. PBX systems also add rich functionality and enhances customer experience with various addon functionalities. PABX is the analog predecessor of modern IP PBX systems.

Who will benefit from an onsite PBX appliance

An onsite PBX appliance may be a good idea if your team needs the ability to phone each other even if the main internet connection is offline. Clients in hospitality may also benefit from an onsite PBX appliance since guests will want to contact the amenities by phone. This will not be possible with a hosted or virtual PBX when all internet connectivity becomes unavailable.

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Award-winning IP voice, Video, Data and Mobility Solutions

Grandstream Networks has been manufacturing award-winning IP voice and video telephony, video conferencing, and video surveillance products since 2002.

onsite pbx appliance

Grandstream’s UCM series of IP PBXs offer an extensive set of unified communication features in easy-to-manage on premise IP PBXs with no licensing fees


Grandstream’s wide-range of Gateways and ATAs are trusted by some of the largest service providers in the world

Gateways and ATAs

Grandstream has the ideal IP phone for every need, including basic, mid-range, high-end, cordless and video phones

IP Voice Telephony

Grandstream’s video conferencing solutions offer small and medium sized businesses flexibility and ease-of-installation along with powerful features

Business Conferencing

Key features

5-level IVR

Call queues

Call Recording

Up to 3000 users

HD Audio

Up to 450 calls

HD Video

Builtin Conferencing


LDAP / XML Phonebook


Web Conferencing

Asterisk Based

Call records

Pincode dialing


CRM integration

Open API

and much more...

Our 5-step process

Our simple 5-step process is designed to get you up and running swiftly. Changing over from your old system to the new onsite pbx appliance is seemless and you’ll have no downtime while we port your number.

Emergency services can rest assured because you will enjoy expedited number porting as numbers are ported after-hours.


Design a solution according to your requirement


Supply all the necessary hardware.


Install all hardware and network infrastructure


Set up the system according to your specification


Finalise number porting and activate system

Purchase Options

Outright Purchase

With an outright purchase you are the owner of the equipment and will need to purchase new hardware when it becomes outdated. An outright purchase is attributed as a capital expense and is taxed accordingly.

Financial Lease

A financial lease is a convenient way to get the infrastructure you need at easy-to-pay monthly recurring fee and not have to worry about ownership. You will receive a tax benefit at the same time as it is attributed as an operational expense. Leasing your onsite PBX appliance means you will have the option to upgrade to the latest technology in a few years without having to outlay capital to do so.

Frequent Questions

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