Analog caller identification transmission method and apparatus
US6493439B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2001 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Aug 2, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2242/22
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for routing analog Caller ID signals includes receiving an incoming telephone call for a first telephone extension, the incoming telephone call associated with a first set of analog Caller ID signals, asserting a ringing signal to the first telephone extension, the ringing signal including the first set of analog Caller ID signals, coupling the incoming call to the first telephone extension, receiving a request to couple the incoming call from the first telephone extension to a second telephone extension, receiving a request to send the first set of analog Caller ID signals to the second telephone extension, and asserting a ringing signal to the second telephone extension, the ringing signal including the first set of analog Caller ID signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.