The company I work for recently received a quote to have a VoIP system installed. The total bill is well over $7,000 and includes a VS-1 Asterisk Server, 2 Analog Voice Cards, hardware based echo canceller, a Polycom conference phone, 5 Linksys 942 phones, a Cisco 871 Router, UPS backup, 24-port switch plus fees for installation and warranty.
To put our needs in context, we currently are a 5 person company (4 full time, 1 part time). 3 of our employees barely use the phone. The other 2 use the phone for probably a combined 2000 minutes a month, maximum. We will probably add another employee or two each year for the next few years, but I don't see our phone needs increasing much.
We are also an IT company. So if setting up a VoIP system is as simple as configuring an Asterisk server and plugging in a few SIP phones, is this not something that we can do ourselves?
My second question is: we have two numbers terminating at our business on the same line. One is a voice number, the other is a fax number. The fax number uses distinctive ring. Can Asterisk handle this? If so, do we only need one analog card, or do we need two? The quote for this VOIP service includes two analog cards (a 4FXO and a 12FXO card).