For great landline connections in Denver CO there are many choices. Comcast is always reliable as well as LibertyBell. Many of these providers have bundle packages that can be very cost effective. Try www.303bundles.com.
You can buy a BT Calypso landline phone at the stores from your landline provider or from a telephone store. You might also find a good deal on these phone at an online store like Amazon.
Most of the landline phone providers offer broadband internet services. I have had good luck with Verizon (http://www.verizon.com/) in two different states and with Qwest in another locaton (http://www.qwest.com/).
Comcast is the largest larges provider in the area. Another in the area is DSCI Corporation but they are smaller.
Combining packages with your television provider is usualy the cheapest way to have a land line in ur house. Another option would be to have a cell phone as a home phone if service permits.
You can't dial a semicolon on a landline phone, nor on a mobile phone, for that matter. It's probably a good thing, then, that you never need to dial a semicolon on any kind of telephone, since a semicolon cannot be part of a telephone number.
Having a landline phone is slowly becoming a thing of the past. You can get good coverage with AT&T.
You can get a broadband accelerator from your service provider or by downloading one from a website of your choice. You can also get one from your landline provider that fits onto the side of your telephone box.
Internet phone service is cheaper but it requires a good internet connection in order for it to be of good quality. If your internet service is reliable then getting internet phone service may be worth it.
Many Americans use Cox Communications as their home phone provider. As to if they are good or not for you, it depends on your needs and wants in a provider.
The best cell phone provider such as the AT&T can help you find a good cell phone plan.
You can find a landline phone service with reasonable pries at Verizon Wireless. You can find them online at www.verizonwireless.com/ or you can visit a local Verizon Wireless store near your home. My family uses Verizon and I think they provide really good service.
Since the phone is for a business company you should purchase a landline plan. It is a short, easy process that doesn't cost that much. All you need is some minutes and you are good to go.