Handoff procedure that minimizes disturbances to DTMF signalling

Details Handoff procedure that minimizes disturbances to DTMF signalling Handoff procedure that minimizes disturbances to DTMF signalling

1990-10-09

1992-08-18

Dwyer, James L.

Telephonic communications

Audio message storage, retrieval, or synthesis

379 59, H04M 1100

Patent

active

051406276

ABSTRACT:
Disturbances to DTMF signaling between mobile stations and the land-based system caused by handoff are minimized. DTMF signals are transmitted in real time between a mobile station and its associated base station. However, if during a DTMF transmission between a base station and the mobile switching center a handoff is requested, the handoff is delayed by a specified time in order to allow completion of the DTMF transmission. Alternatively, both base stations involved in the handoff transmit overlapping DTMF tones until the handoff is completed. If the handoff is requested before the start of the DTMF tone transmission, the DTMF transmission is delayed until the handoff is completed.

REFERENCES:
patent: 4457018 (1984-06-01), Takayama
patent: 4475010 (1984-10-01), Huensch et al.
patent: 4485486 (1984-11-01), Webb et al.
patent: 4608711 (1986-08-01), Goldman
patent: 4654867 (1987-03-01), Labedz et al.
patent: 4669107 (1987-05-01), Eriksson et al.
patent: 4670899 (1987-06-01), Brody et al.
patent: 4737978 (1988-04-01), Burke et al.
patent: 4811380 (1989-03-01), Spear
patent: 4837800 (1989-06-01), Freeburg et al.
patent: 4912756 (1990-03-01), Hop
patent: 4953197 (1990-08-01), Kaewell, Jr. et al.
patent: 4955082 (1990-09-01), Hattori et al.

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