Station groups lag behind larger networks in investing in new IP routing systems despite interoperability hurdles being overcome and IP gear prices falling. But the new infrastructure may end up being more horsepower than they need. Above, a control room at NBCUniversal’s Boston Media Center IP-based in Needham, Mass. The facility handles four businesses in the market — WBTS (NBC), WNEU (Telemundo), New England Cable News and NBC Sports Boston — on one common IP-based technology platform.