Voice/data transfer method and apparatus utilizing an alternate

Telephonic communications – Audio message storage – retrieval – or synthesis

Patent

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H04M 350

Patent

active

055880452

ABSTRACT:
The reliability of call transfer in a PBX can be improved by verifying the availability of a destination port before a transfer is attempted. The incoming call is routed to an alternate line after the interrogation occurs. Once the availability of the desired facility is confirmed, the call can be picked up by the destination port.

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patent: 5153912 (1992-10-01), Sakakibara
patent: 5175761 (1992-12-01), Khalid
patent: 5325422 (1994-06-01), Ladd

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