Cam sites and phone lines both deliver adult adult-chat experiences, but the mechanics are very different.
Camera required or not
Cam sites require video — lighting, setup, and being visible. Phone lines are voice-only, so there's no camera and far less prep.
Cost structure
Cam sites often run on tips or per-minute video rates that add up fast. Talk Dirty Chatline's pay-as-you-go minutes ($5.49 for 10 minutes after your free trial) are simple and predictable.
Privacy
No video means nothing to record or screenshot — voice-only calls are inherently more private. See sex chat lines for more on the voice format.