HI     I have a UC320 unit setup for 18 customers , with spa 512 phone, now sometimes when the  receptionist transfer the call  to the user while he is on the line, the second caller can overheard the first line talk. it happend occassionally  and ra...

HI:     I was asked to replace a telephone SPA512 of customer, she already had a long list of the contact and call history, I was wandering if it going to lost if I replace her spa512 with a new spa512.  I know the voice mail won't lose, but contact ...

Hi, do any of you guys experience the second line problem with UC320 and SPA 512GI setup the uc320 with a customer for 20 phone users(SPA512G), now some of them are complaining that when they are in conversation in the first line, the second line dia...

HI, I installed the UC320 for a customer and they have 19 users,  we are using sip trunk for voice trafficit now encountered an annoying problem, The  isp is doing the maintenance in recent period and their sip trunk is coming down and up occasionall...