Deutsche Telekom is the latest pay TV operator to sign an across the board deal with Netflix, having previously signed up only for Germany. DT is one of the largest pay TV operators in Europe, probably 3rd after Sky and Liberty Global, with an estimated 7.3 million customers, with 3.0 million in Germany and another 4.2 million outside it, which have now been opened up to become Netflix customers. Before this, customers in Germany, Poland and the Netherlands had Netflix access, including 4K content. Presumably a deal can also be reached for its 160 million mobile customers around the world at some point. US CCAP equipment provider Casa Systems is finally planning an IPO and says in an S1 filing…