The call is easily attached to my iPhone or my vontage phone. Once, I forgot to get my vontage phone before going to bed. Then I remembered I could use my iPhone since it was connected to one line and also on my night stand because I was already in bed. The call was clear and I could use my iPhone since it is hooked to my vontage line. So,it is easy to take a international call on my iPhone.
Yoshie Rose about Vonage Home Extensions