"There are a variety of office phone systems available. For an office needing around 60 phones, a key system (KSU), with features such as calling another line in the office, costs around $200 per station. For small offices needing less features, phones could run around $100 per station."
Yes, Office Depot does sell small office phone systems. Whether or not they have your desired size, I cannot say for sure, but they do offer various sizes and setups of phone systems.
There are several different phone systems in the United States. Here are a some of them. Small Office Phone Systems, Buisness Phone Systems and Home Phone Systems.
To find some information on office phone systems, you can visit such sites as Talk Switch; they offer different detailed phone office systems for small businesses for an unbeatable value with self claimed great prices, Cisco, who offers basic and affordable service, and places such as Office Depot, Staples etc.
You can go to a sight specific for office telephone systems or you can go to a phone carrior such as bellsouth or you're local phone company and ask them direct.
"It can be easy for some to learn how to use offic phone systems. CNET is a great technology resource to use in looking up product information. This site will offer information on price, performance and ratings for office phone systems."
There are several companies that can handle business phone systems, it also depends on if you are looking for business cellular phones or office phones. Some companies that handle cellular business phones are AT&T, Apple, and USCellular. Some companies that handle office business phone systems are Windstream Business, Broadview Office Suite, and aTelephone System.
There's some good companies out there that officer perfect office phone systems, such as the avaya, for small to medium sized businesses.
Small office telephone systems can be purchased directly from most phone companies like AT&T. Other places to try are office supply stores like Staples.
By talking to the dealers directly. This site will cover a multitude of dealers nearby for your office phone needs. http://www.buyerzone.com/local2/s/MI/Phone-Systems.html
If, by "phone system," you mean a multi-line telephone, there are many companies that sell such phone systems. Best Buy, J&R, Staples, Office Depot, Office Max, Quill, and Amazon are some of the many options.
Panasonic phone systems can be purchased at any store that specializes in communications technology or has extensive inventory of communications technology. These stores include Best Buy, Office Depot, Radio Shack, and Amazon.
ATS (Advanced Telephone Systems) is an Irish telecommunications company that specializes in service and products like VoIP, business office phone systems, broadband connections, voice calls, communication equipments, etc.