... from the just-out, excellent, O'Reilly book Asterisk: The Future of Telephony: .... "companies who choose to ignore Asterisk do so at their peril. The flexibility it delivers creates possibilities that the best proprietary systems can scarcely dream of. Asterisk is an enabling technology, and, as with Linux, it will become increasingly rare to find an enterprise that is not running some version of Asterisk, in some capacity, somewhere in the network, solving a problem as only Asterisk can."
We could not have said it better (then again, we are not authors)(maybe some day).
It indeed will be few if any organizations that are not using some sort of voice over the internet, and those that do not are only harming themselves, and will come around when they are forced to by their environment, whether it be their competitors, their vendors, their clients, their employees, et cetera.
Please contact us to inquire how we can provide an Asterisk solution to meet your organization's needs. We intend to earn your trust.