Invention Grant
US07990879B2 Method, apparatus, system, and computer program product for interruption-free conference calling 失效
方法,设备,系统和计算机程序产品,用于无中断电话会议

Method, apparatus, system, and computer program product for interruption-free conference calling
Abstract:
The present invention relates to instability problems in circuit switched conferencing, and provides a method for establishing a backup “voice only” telephony link in parallel with a H.320 conference link. The two links between the calling parties is handled as one logical call entity. Audio is muted on the backup voice telephony link when status of the H.320 link is okay. If communication problems are detected on the H.320 link, audio is muted over the H.320 link and switched to the backup voice telephony link instead.
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