Unified Communications ROI, Developing a UC Strategy, UC Architecture and Service Models
SIP and Unified Communications Standards, Mobile Unified Communications, UC Integration and Interoperability, Unified Communications Security
IP Telephony ROI, VoIP Migration and Implementation, VoIP QoS and Performance, IP Telephony Systems
Communication Integration with Enterprise Applications, Social Networking for Business, Business Video Conferencing and Telepresence Technology, Mobile Unified Communications Applications, Collaborative Applications
Can we use VoIP and a PSTN PBX with each other? When there is a problem with the PBX, will the VoIP still work and our calls still connect?
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Yes -- depending on the equipment, but all will have some type of gateway. These systems are called hybrids. As for the failover, if one or the other side fails, it depends on the type of failure and how your equipment vendor handles these services.
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This was first published in September 2006
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