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Pioneering New Possibilities Together

Digital transformation is accelerating and organisations are embracing the change. Driven by a vision to excel, you are redefining the future of your business. Thriving on this vision, Digi Business constantly raises the bar with an industry-leading network, business solutions and services, all designed to support you and your organisation.

Purpose-built Solutions

Customising connectivity & providing managed services for business transformation.

Next-Gen IOT

Empowering digitalisation for smart automation & advanced business operations.

A.I. Implementation

Powering big data & machine learnings for Artificial Intelligence applications.

MEF 3.0 Certified

A leading ecosystem of international industry experts driving enterprise digital transformation.

What is SIP Trunking?

SIP (Session Initiation Protocol) trunking is a modern, digitalised Voice Trunking for telephony service that is used for sending and receiving calls (local & long-distance), which connects to your IP-enabled private branch exchange (PBX).

How Does SIP Trunking Work?

Features of SIP Trunking

What makes SIP Trunking essential for your business


Add new channels to accommodate more calls anytime. SIP is also more reliable and less likely to experience connection breakdowns.


SIP supports a majority of modern VoIP equipment and software (e.g. IP PBX systems, desk phones, and VoIP gateways)


Your business can move to new locations without having to switch to a new number or notify customers.

Customer Support

Reach out to our 24/7 business phone support and connect to dedicated Digi personnel right away to resolve any issues encountered, quickly and efficiently.

Benefits of SIP Trunking


Enjoy call charges that are lower than that of traditional phone service. Also optimise pricing on a user basis to accommodate working environment that requires users to make multiple calls concurrently.

Unified Communications

Access a suite of IP-based communications benefits such as mobility, instant messaging, collaboration applications, and cloud-based tools that boost an organisation’s productivity.

Network Consolidation

Merge voice and data services into a single network. By leveraging on this, avoid paying separate bills to the same service provider for various services.


Enable business operations to keep functioning smoothly in case a telecommunication breakdown occurs, especially in a call centre environment. Stay connected to customers as long there is an Internet connection.

SIP Trunking is the right choice for your business

If your business is ever-growing

For instance, your call volume or the number of concurrent calls is likely to grow as your company grows. In such cases, technology should not be a hindrance but a complement. Therefore, SIP Trunking allows the integration of communications across multiple channels and offices on a single network.

If you want to reduce communication disruption

Phone malfunctions, severe weather, or broken telephone poles are some of the factors that can cause traditional telephony services to be interrupted. However, SIP Trunking with VoIP allows you to bypass all these disruptions by making it possible to redirect calls to other lines, offices, or your mobile device.

Get in touch with us

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