Flat Rate Service Plans

Flat rate service plans for small businesses starting at only $99/month. Plans include phone service for up to five handsets, number porting, emergency (911) service, and unlimited local and long distance calling.


Castle Telecommunications was founded on the principle of making VoIP affordable, and accessible to everyone. Often hosted SIP providers do not provide an interface for companies to control their information, very poor or non-existent PBX features, or complex configurations.

Castle Tel makes life easy for voice and information technology providers, by offering a largely hands off white label service. How much revenue are you leaving on the table by referring your Cloud PBX and VoIP offerings to someone else?

Phones are often the primary, and sometimes, the only interaction point with a business. It’s paramount that the phone system is reliable, functional and professional. Based on industry standards, open source platforms, and reliable tactics, Castle Tel can take you and your customers to new heights.