Method and system to provide telephony tones and announcements in a packetized network environment
US6456601B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1999 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Jun 4, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2203/205
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and a system of providing call progress tones in a packetized network include storing the call progress tones and pre-programmed audio deliveries at a first device and includes multicasting or broadcasting the tones and deliveries from the first device to a number of telephony-enabled devices. The multicasts are in a format that enable the telephony-enabled devices to individually control transmissions of the tones and deliveries to other devices, particularly calling devices for incoming calls. Typically, the audio deliveries include memory intensive signals, such as announcements and music-on-hold. The progress tones include conventional call status tones, such as ringback, busy and error tones. In one embodiment, the telephony-enabled devices are telephones to which the calls are directed. In another embodiment, the telephony-enabled devices include proxies that process the system-wide multicasts for telephones of the network. Optionally, all of the tones and deliveries may be multiplexed into a single data stream. The multiplexed multicast data stream is then processed when a particular tone or delivery must be extracted. Optionally, less frequent announcements can be …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.