VIVA offers IP based Converged Communications Solutions. You may contact VIVA for SIP Trunking, IP PBX & PSTN integration, MS OCS & IP PBX integration, Managed VoIP and ''''Secure'''' VoIP.
The function “Answering Rules” realizes the full control over your telephone system. Using the answering rules which are often easy by the setting you can make a unique telephone system conforming to your needs, graphs and preferences.