Resetting Cisco Phones that are stuck on Detecting network
. I am not seeing these phones request IP's at this point i think these respective phones need to be reset. for the 88/78 series phone press the cog wheel, navigate to admin settings and reset all. for the 7942, disconnect the power/poe cable, press and hold the # key, reinsert the power then enter 0123456789*# when speak light and button light flash once. that should reset it.