Alternate network fallback for ip telephony

Details Alternate network fallback for ip telephony Alternate network fallback for ip telephony

H - Electricity

04

L

H04L 1/20 (2006.01) H04L 12/66 (2006.01) H04M 3/54 (2006.01) H04M 7/00 (2006.01) H04M 11/06 (2006.01)

Patent

CA 2321472

The invention relates to methods and apparatus for switching a call from an unreliable network to an alternate network when a QoS of the network falls below a predetermined threshold. The invention includes a telephone call switching apparatus which monitors the QoS of the call. When the QoS of the call falls below a first threshold the switching apparatus establishes a connection over an alternate network. If after a predetermined time period or after the QoS falls below another predetermined threshold the call is transferred to the alternate network connection. While the switching apparatus is maintaining multiple network connections, the idle network connection remains muted.

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