SIP Trunking Services

HomeProducts & ServicesSIP Trunking Services

SIP Trunking simplifies your business telephony and saves you money. Global businesses that want to optimise their voice infrastructure and better manage costs should consider Colt as a provider for SIP Trunking services. With SIP Trunking solutions you simplify all your telecommunications into a single IP network across 26 countries in 4 continents.

You keep all the features of traditional telephony and call quality while gaining a monthly cost-saving as high as 50%.

Colt Effective Expertise

By reducing the number of suppliers into one IP network you save money. Free internal calls and sharing voice/data infrastructure also brings network costs down.

Our highly certified SIP Trunking service experts work with you to ensure we get it right the first time. You’ll be up and running quickly with minimal disruption to the business.

Easy & Reliable

Cut down on administration time with our global network. We manage everything and you only ever have to deal with a single point of contact.

Build a voice network that meets your compliance, disaster recovery, and security needs. We offer SRTP & TLS encryption, Performance Reporting and PSTN replacement.

Coverage & Choice

The only global service provider with consistent service and delivery wrap. We have true “in-country” capabilities and are continually expanding into new territories, with our most recent expansion giving us a global footprint of 26 countries across 4 continents.

Pick the QoS you want from our wholly-owned MPLS or Ethernet networks. Seamless migration and porting, PSTN compatibility, and emergency call and CLI handing.

Emergency Calls in Japan

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Want to learn more about our business phone services?
Check out the rest of the products below.

ISDN Voice Services
With over 20 years’ experience, and the most comprehensive Pan-European network, Colt is the ISDN provider of choice for thousands of businesses across Europe.

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Case Study


Salesland banks on Colt for its switch to VoIP. Salesland focuses on supporting businesses that want to outsource their sales services.

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