telegate AG is Germany’s second-largest provider of regional advertising and telephone directory assistance. With its online business directories and, smartphone and iPad apps, and software products from klickTel, telegate consumers receive personal contact data, business information, and news from around the region.

To stay ahead of the competition the company replaced its old business IT engine from its traditional, TDM  infrastructure to a combined Ericsson IMS  and Genesys SIP-based contact center infrastructure. Built on a state-of-the-art SIP protocol, IMS is capable of connecting traditional cellular (GSM,UMTS), analog and digital (ISDN) telephone networks with IP-based networks that use Voice-over-IP.

These technology advances are providing a host of new opportunities. Many service providers have implemented the SIP architecture, which is now the industry standard, since it is much easier to create new products, processes, and invoicing models.

Companies using the Genesys solution running on Ericsson IMS are now able to implement cutting edge multi-channel and omni-channel concepts for connecting customer service apps, video or Web-based chats. Compared to traditional TDM solutions, there is no limit to the kinds of routing that can be implemented. Cloud-based contact centers are also possible, so agents are not tied down to a specific workplace.


  • Cost-efficiencies
  • Ability to provide multi- and omni-channel concepts for connecting customer service apps, video and Web-based chats
  • Unlimited routing capability
  • Agent location flexibility due to Cloud-based contact centres

“We’re one of the first companies to make such a major change with an IMS and SIP integration. Thanks to the support by Genesys Professional Services and the great collaboration between the two companies, we were able to implement this new system very smoothly.”

Michael Geiger
Vice President Technology
telegate AG


  • Transform its “analog” business model in the age of digital customer service