Type II Caller ID
In 1995, Bellcore released another type of modulation similar to Bell 202 in which it became possible to transmit caller ID information and even provide call-disposition options while the user was already on the telephone. This service became known in some markets as call waiting ID, or (when it was combined with call-disposition options), Call Waiting Deluxe; it is technically referred to as Analog Display Services Interface. "Call Waiting Deluxe" is the Bellcore (now Telcordia Technologies) term for Type II caller ID with Disposition Options.
This CLASS-based POTS-telephone calling feature works by combining the services of call waiting with caller ID but also introduces an "options" feature that, in conjunction with certain screen-based telephones, or other capable equipment, gives a telephone user the option to
- Switch: Place the current call on hold to take the second call (not a new feature)
- Hang-up: Disconnect the current call and take the second call (not a new feature)
- Please Hold: Send the caller either a custom or telephone-company-generated voice message asking the caller to hold
- Forward to Voice Mail: Send the incoming caller to the recipient’s voice mail service.
- Join: Add the incoming caller to the existing conversation.
Read more about this topic: Caller ID
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