SIP Trunking simplifies your business telephony and saves you money. Pan-European businesses who want to optimize 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.

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 supplies 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 first time. You’ll be up and running quickly with minimal disruption to the business.

Easy & Reliable

Cut down on administration time with our Pan-European 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 Pan-European service provider with a consistent service and delivery wrap. We have true “in-country” capabilities and are continually expanding into new cities.

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.

Learn more

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.