Linksys SPA9000 Router

Pros: Inexpensive, compact, supports mixed digital and analog, fully user-configurable
Cons: Complex to configure, lacks polish, limited flexibility and expansion

The SPA9000 is a small digital telephone PBX, the core of the Linksys Voice System (LVS). It is designed to be a cost-effective solution for a small business office, taking advantage of modern VoIP services and digital networking to provide a full ...

Pros: Very clever little box with lots of promise.
Cons: A pain in the rear to set up by "normal" people. Unreliable.

The SPA9000 has the promise of a great device, but as an average regular geek setting it up it is a pain in the rump. I have had it working reasonably well, then it falls over after making minor changes and a couple of times for no reason at all. So it has to be re-set up, which takes hours, not minutes as claimed.

This is not the ultimate phone system as sales people will tell you. It has too many options, so if you are a computer programmer with lots of spare time you will love it, but if your a regular person running a small business like me forget it. Out of 10 I give it a 2 because it is so small.

Sadly, I cannot recommend it and there is virtually no support unless you are a dealer, but I bought my system with 4 SPA941 phones independently.

Pros: Add up to 16 phones, built-in features, auto-attendant, music on hold
Cons: Set up can be a bit time consuming.Thanks Leo(ZingoTel) for help

I ended up dropping 4 business telephone lines and added this device to make long distance calls over on the Internet. You will need phones for this device, so might want to look at the Linksys 942 IP phones as well. The service company I went with is Zingotel. Got their business unlimited plan where you can get up to 16 phones connected to the SPA-9000 all with features like caller ID, voicemail, call forwarding and more for under $50 a month total. Very decent.
As for this device, it is saving me money already. I've got 3 full time people on the phones all the time, and they're on the phone making long distance calls all the time. Linksys did a great job on this product!!!