Do I need a phone line to use SBC DSL?

Yes, you need a phone line to use SBC DSL. SBC DSL operates over traditional telephone lines, utilizing the existing infrastructure in your home or office. This means that you must have an active phone line to establish an internet connection through SBC DSL. The phone line is used to transmit data signals, providing you with high-speed broadband internet access. While you may not need to use the phone line for voice calls, it is required for the DSL service to function. It is important to have an active and functional phone line before subscribing to SBC DSL, as the service relies on it for connectivity.