Hello-We have a SG300-10P as well as a SF302-08P. They are providing PoE and data for a mixture of 7961s, 7960s, SPA504s and SPA514s. The problem is that there is a very audible "hum" on the 79XX phones that are connected to the SG300.Moving the phon...

Hello-I am replacing wireless for a local hotel. It is a 2 story building in a L shape, about 120 rooms. All cat5e cables have been tested and certified. I installed a 302-08P switch in the MDF and IDF and are uplinked via copper/gig ports. I am repl...