Any one of telephone connections:
- Analog telephone line
- DSL with digital filter
- PBX system with analog port
For outgoing calls, simply dial the other party directly.
For incoming calls, the other party first dials a toll-free captioning service then enters your phone number in order for their calls to be captioned for you.
Connection #2 (optional):
This optional second phone line enables the other party to dial your number directly with the captioning service automatically connected. For outgoing calls, simply dial the other party directly.