The myth of hybrid IP-PBXs..Traditional phone companies talk about migration stories. As part of the migration story, these legacy PBX vendors proposed IP gateway cards to facilitate consolidation of the network and to have voice paths available over the IP network. Thus eliminating tielines between sites now you have an IP enabled phone system.
The next phase in the legacy PBX migration myth involves the mix of IP phones that are needed as incremental growth is incurred. The IP-phones will need a seperate IP-based server in order to accommodate the new devices. As growth continues (and the legacy PBX continues to age), the story will continue to unravel, only after the customer has made significant investments, with the end of software development on the legacy PBX. Customers will be forced to forklift the existing chassis, and once the forklift upgrade is complete, they will be left with the same infrastructure limitations they had with their previous legacy PBX model. An investment protection story with the manufacturers best interest in mind...not the customers.
