Polycom SoundStation Duo is a versatile conference phone that works with both analog and IP- phone lines. This makes it a unique device - in fact, two phones in one! With this conference phone you will not need to figure out what type of line your colleagues or partners use. Polycom SoundStation Duo provides full communication through public telephone lines and IP-telephony lines.
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.