I met with a problem with Cisco 7911G ip phone. the symptom is listed as follows,1) when new call comes, there's no response both pick up or hang up the phone receiver.2) when new call comes, there's no response when dial the soft key to answer.3) wh...

hello everyone, I am now facing a big problem. the description is as follows.our company is faced with foreign sites, one in China, and one in France.To reduce the telephone fees, we have established a private line between both sids. so in this case ...