| Standard CapTel | 2-Line CapTel |
|---|
| Captions and voice are provided across one telephone line. | Conversation is carried on one line, captions are provided on a second telephone line. |
| Captions must be initiated at the start of a call. | Captions can be turned on or off on demand, at any point in a conversation. |
| Your callers must first dial the toll-free captioning service, then enter your number, in order for you to receive captions of their call. | Incoming calls are automatically captioned. Your callers simply dial your phone number directly. |
| Call-waiting tones may interrupt captioning support. You cannot use call-waiting during a captioned call. | You can use call-waiting during a captioned call. |
| Automatic call-back (*69) option cannot be used. | Automatic call-back (*69) option is supported. |
| Calls to 9-1-1 and 7-1-1 are treated as Voice Carry Over calls and routed to 9-1-1 and relay directly. The 9-1-1 or relay operator’s typed messages appear on the CapTel display, but you will not have sound over the phone line while receiving captions. | Calls to 9-1-1 and 7-1-1 are captioned through the Captioning Service on the second line. Your conversation is conducted on the first line. You get both sound and captions of the call. |
| Calls are automatically routed through the Captioning Service on outgoing calls only. | Calls are direct between parties. On every call (outgoing or incoming), the Captioning Service is connected automatically through the second telephone line. |
| Requires one standard (analog) telephone line. | Requires two standard (analog) telephone lines. |