Multiple call arrangement - allows the user to receive several calls simultaneously, even if they came by the same line. This stops the redirection of incoming calls directly to voice mail in case the line is busy or if the user is already involved in an active call.
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.