iPhone is an Apple product, and therfore Apple offers services for iPhones. This company is very successful and therfore have many ways through which you can contact then to learn more.
There are many companies that offer business Voice over IP services today. Some of these VoIP companies would include the Vonage and Light Edge companies.
Ip Telephony Solutions offers fast, reliable, and easy phone-to-phone, fax, and telephone connections. It is generally unregulated by the government. The communications are carried over the network commonly known as PSTN.
Services provided by the communications company SureWest include digital TV, internet access and telephone services. For businesses they also offer IP phone systems, data storage and WAN solutions.
The Cisco IP phone system is a communications system used in business and is a way for companies to communicate better there are various models but essentially this is similar in the way they work to a regular phone.
Business IP phone services blend the power of the Internet with phones to deliver powerful integration with software applications and the ability to integrate remote workers as though they were on-site. Also, unified messaging systems that rely on IP telephony aggregate voice, text, email and other communications under a single call center, providing for better customer service. IP phone services come in the form of in-house phone systems that operate on existing data networks or cloud-based services known as virtual PBX systems that host phone system hardware off-site.
BT provides broadband and internet, phone services, phone systems, websites and domains, mobile services, IT services, networking, cloud services and email, and voice over IP coming soon.
Cogent Communications is a fiber-optic internet service provider. They offer internet service, IP transit services, and colocation services to their customers.
Major VoIP companies like CISCO and AVAYA have representatives that can aid on the purchase and use of IP phone equipment. As two leaders in the field, they both have numerous solutions, especially for businesses.
DynDNS offers a service that tracks the IP address of your hostname. They offer either an application that runs on your computer, or an update client for your router that will automatically update the IP address so you can access your information.
Vonage is a voice over internet phone service. They do not offer internet services. Yes your computer needs to be on to get incoming calls. If you are looking for a low cost digital (VOIP - voice over IP) service, perhaps look into Magic Jack.
Vonage is a voice over IP phone service. They do offer internet server. The reason they do not offer internet service is because an internet service is required to use Vonage.
There are several IP phone services. Phone Power, ITP, RingCentral Professional, Lingo, Phone com, Vonage, Net2Phone, 8x8, Skype, Comcast. It is best to read reviews and see what features are included in a plan, rather than just basing your choice by price.