SIP Trunking

One SIP Trunk,
unlimited global connections

Connect to the world seamlessly with an enterprise-grade SIP trunk. Enjoy instant set-up and HD calling.

1500+ Ratings

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Trusted by leading brands
across the globe

5.2K+ Global Customers

More than 5000 businesses trust Acefone's interactions suite for their business communication.

4.7 Rated by Users

Rated among the top providers by thousands of users across Capterra, G2, Trustpilot & more.

2.5B+ Built for Volume

Our servers run more than 2.5 billion calls annually without sacrificing quality.

50% More Productivity

Drive up agent productivity & efficiency by reducing their idle time between calls.

Worldwide connectivity, world-class operations

SIPs connect your existing PBX to as many worldwide channels as you need using the Internet,
allowing you to make international calls swiftly and cheaply.

Stay local or go international

Connect with customers across the world via completely secure and internationally compliant SIP lines

Unlimited channels—everywhere

Network across nations with ease, as per your scale and flexibility.

Deploy SIP connections anywhere in the world
Scale up or down without worrying about hefty costs
Integrate your favourite tools to amp up your solution

Enterprise-grade security and reliability

Your safety is our priority. Enjoy multi-layer security and maximum uptime.

Guaranteed 99.99% uptime for flawless conversations
Multiple levels of firewalls for complete data privacy
High-grade encryption to protect sensitive information

A cloud-powered communication system

Move sales and support teams to a single SIP network.

Collaborate on the go with HD voice calls and SMSes
Increase productivity with smart tools and features
Track agent performance on our user-friendly portal

Take your business everywhere with SIP trunking

Our simple yet sophisticated solutions make your dreams totally achievable. Here's how you can do wonders with SIP

SIP trunking = true
cost savings

One pocket-friendly payment plan for both voice and SMS solutions
A robust, all-inclusive SIP infrastructure—no extra services required
No hidden costs with transparent and reliable billing every time

Become a globally
recognised brand

Connect with clients anywhere they are with SIP. No exception
Call from numbers with local area codes for your target country
Get complete reliability and HD quality audio

SIP features to set you apart

Free phone numbers

Give your global customers a reliable toll-free helpline number that supports high-definition international calling.

Local numbers

Establish a strong area presence for your business with local number codes, regardless of your physical location.

Vanity numbers

Get a brandable alphanumeric number for your business. They are easy to memorise and customers can reflexively dial them.

IP whitelisting

Whitelist Acefone’s global range of IP addresses to automatically switch to another IP in case of any unexpected events.

Toll fraud protection

Enjoy a high level of security and privacy, and rest assured against common telecom fraud. Always keep your data safe.

Alert triggers

Receive alert triggers if anything goes wrong in your SIP infrastructure. We ensure security on standby at all times.

Works with the Top CRM platforms in the market

Build out your CRM workface with out of the box integration

Explore all integrations

Zendesk

Zoho One

Salesforce

Leadsquared CRM

HubSpot CRM

Freshworks

Freshdesk

Bitrix24

Kapture CRM

MS Teams

Google Workspace

MS Dynamics 365

When I signed up for Acefone, I had very little VoIP knowledge, but the technical support was second to none, even for companies with limited technical skills. Added bonus: it works out cheaper than my existing single BT phone line.

Lee M.

Manager, Medical Practice

Our company has been using Acefone from the beginning and we have never had any issue with the service. Their support is amazing, always happy to help and always polite. If you are looking for VoIP, you cannot find a better provider.

Patryk Weglarz

United Kingdom

My experience has been very positive. The software is easy to use and integrates well with our existing system. The phone was configured in minutes by a remote technician. I've never had to ask for assistance over the last 12 months.

Gordon R.

Director, Airlines/Aviation

Acefone is easy to set up, thanks to great help from customer service. The software has many useful features. I chose Acefone because a real person talked to me and helped me pick what I needed. They resolved all my queries there and then.

William A.

Director, Financial Services

Acefone's onboarding process is great — the company helped me in every way imaginable. The support representative was really informative and patient with all my queries. The software appears to cover all bases as well.

Gemma L.

Proprietor, Accounting

Frequently asked questions

Here are some of the most commonly asked questions about SIP Trunking.
Still don't find what you're looking for? Chat with our experts!

What Is SIP?

SIP (Session Initiation Protocol) is a technology used to establish, modify and eventually terminate connections between two or more VoIP participants—no matter where they are in the world. SIP lets you reap the advantages of VoIP such as reduced costs and minimal lags and downtimes.

What are SIP trunks used for?

While SIP trunks can have several applications, they are primarily used to facilitate Internet-enabled high quality voice calls.

Is SIP the same as VoIP?

VoIP is an umbrella term that refers to every Internet-based call. SIP trunking is a technology that connects traditional telephony devices to the Internet to enhance their functionality.

Do my agents need technical expertise to understand SIP?

Not at all. We provide simple set-up instructions and a user-friendly portal for day-to-day management. Our support representatives are also happy to walk you through configuration and get you up and running in no time.

You're at the start of something special.

Try our cloud communication solutions today.