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 SIP Trunking. With SIP Trunking 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%.

Cost 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 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.

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Lawrence, Account Manager

“The team culture at Colt is fantastic. We learn and grow together. I’ve always been passionate about technology and working for a firm that is constantly innovating drives that passion more and more every day. The culture at Colt is great and I love the fact that as an employee we work with and gain exposure to other important areas of the business.”

Careers at Colt
As VoIP gains more acceptance and demand increases, we’re confident that Colt is well equipped to accommodate our growth and will continue to provide us with the excellent support we always receive. Intercall
VP Telecoms EMEA, Intercall