Stadtwerke Langenfeld launch IPTV with purTV February 21, 2018 13.34 Europe/London By Jörn Krieger German public utility company Stadtwerke Langenfeld is adding IPTV to its telephony and internet service. The basis is the purTV white label product from purtel.com, a German B2B service provider for network operators. In addition to live TV, the platform contains catch-up TV and video-on-demand. In the city of Langenfeld there are 25,000 households of which the municipal utility company is currently able to serve 12% with telecommunications services through its fibre-optic network, corresponding with 3,000 households.