Not only the Telekom offers DSL and telephone there are some other providers, which have their own network and DSL complete offers are available where a hand in addition to Deutsche Telekom. About Arcor, HanseNet, NetCologne include, M-net or Versatel. The price very attractive complete packages generally consist of telephone, DSL connection and a flat rate for both areas. The monthly basic costs and setup fees are significantly lower than those of Telekom. If you book a flat rate, should compare but more accurately the per-minute rates. Here convince the Telecom competitors mainly in the area of internal talks, offered in some cases free of charge. A reduction of prices of call by call-by-call is not possible here; only Telekom is obliged to allow these savings opportunity. Another variant to lower call costs is the telephony over the existing Internet (VoIP). Many VoIP providers, there are about cheap rates to landlines or abroad. Although you are usually not quite as cheap as in the call by call, for this but something constant.