A line up of major vendors in the cable industry once again used the Anga Com trade show in Cologne to announce tweaks to their DOCSIS 3.1 product lines this year. Usual suspects Arris, Cisco and Casa Systems all unveiled new offerings to accommodate the rising operator demand for DOCSIS 3.1 capable products – but a notable difference this year centered around new types of virtualized CCAP (Converged Cable Access Platform) technologies. Arris and Cisco unveiled new PHY offerings, while Casa Systems showcased its new passive optical network (PON) and IP network product lines, while smaller German player AVM launched its first product to support DOCSIS 3.1 – all claiming improved savings in cost, space and bandwidth. The biggest news…