Unlike most other cable networks, CSN Philadelphia is only distributed via microwave and fiber optics. The infrastructure Comcast uses for this was left over from the now defunct PRISM Network. Since CSN Philadelphia does not uplink its signal to any satellite, Comcast is able to avoid an FCC regulation that requires most television channels to be offered to direct broadcast satellite (DBS) companies. Lawyers for DirecTV and Dish Network have attempted to show that Comcast Corporation, who owns both CSN Philadelphia along with most of the cable systems in the Philadelphia market, is acting in restraint of trade because it does not uplink CSN Philadelphia to satellite. However, so far neither the FCC nor the federal courts have forced Comcast to make CSN Philadelphia available to the DBS services. Thus, DBS customers in the Philadelphia region do not get access to the network or any of the local teams' games. However, cable companies other than Comcast within the designated CSN Philadelphia market do have access to the channel. In December 2006, Comcast even made a deal to place CSN Philadelphia on Verizon's competing FiOS systems.[2] All of the other members of Comcast SportsNet are available to DBS subscribers, with the exception of CSN Northwest (however this is only because DirecTV and Dish Network have not been able to reach a carriage agreement with Comcast).