I know commercial VoIP is cheaper than traditional phone lines. So for home user, it works. But will it work for business? For ease of argument, I assume the following situation.
1. current situation: 10 phone lines, main phone number is 905-1234567, 20 users share 10 phone lines with extensions. All 10 phone lines are bundled together (rollover).
internal calls by short extension;
transfer calls to other extensions;
oversubscribe phone lines by extensions which saves money;
2. VoIP solution (imagine): keep main phone number 905-1234567, subscribe 10 or less VoIP phone numbers.
Q#1: Is it possible to keep most or all of the current features/phone system while using VoIP numbers?
Q#2: Is it practical for business to use such commercial VoIP solution to cut the phone line cost?
I am confused. Please help. Thanks.