I have use Phoen in my working env, and it is ease for implemt and customer support is good, it give me calling solution internal and outgoing call both i use this phone in my daily use all featurs and is easy to integrate in my env.

Numerous features of the Grandstream IP video phones that I admire include high-definition video quality. PTZs is so close to face-to-face, you almost think you had a video chat. Traditional telephoning in the past can compete with this remarkable technology. Myriad of models that are available assures me of finding the one cellphone that exactly meets my needs and my budget.

Easy to use for my customers and very cheap