“Cloud PBX” is practically the same as the telephone system, only it
works within the Internet means, not the simple telephone line. Using this
service you don’t have to worry about how flexible and reliable is your
telephone system anymore.
From mobiSIP Android or iPhone: SIP Client iPhone is uniquely designed and developed to add the power of making voice over internet transfer protocol calls directly through the Android or iPhone. It’s developed by mobisnow.