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%.


One IP network with many cost-saving benefits

Cost Effective

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.


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.


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.

Slice 1

David Coupez


Thanks to Colt’s unified communications solution we’re converting more prospects to sales and raising customer service levels by meeting our target of answering at least 90 percent of incoming calls – that’s 50 percent more than before – and our turnover has gone up by €5 million in one year.

A truly Pan-European IP network


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.


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

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