International Business Machines Corporation

Diaa Eldin Ali Mohamed Mahmoud Ali

Patrick Joseph O'Sullivan

Hitham Ahmed Assem Aly Salama

Christian Benjamin Kau

Teodora Sandra Buda

Lei Xu

A Voice-over-IP (VOIP) system includes a plurality of multi control units (MCUs), in which a first MCU hosts a VOIP session. A method for recommending an MCU to host the VOIP session includes receiving MCU status associated with performance of each of the first MCU and a second MCU included in the VOIP system. The method further includes determining, based on the first and the second MCU status, that hosting the VOIP session on the second MCU can improve a VOIP system metric. According to the method, a recommendation is communicated to transfer hosting the VOIP session to the second MCU.

Adaptive multi-control unit load balancing in a Voice-over-IP system

A conference call management method, system, and computer program product include inferring an Internet Protocol (IP) address of a new user requesting to join a call including at least one other user, inferring a codec to stream an emulated network pattern for the call if the new user were to join the call, measuring a call quality perceived by the at least one other user in the call while the emulated codec is run on the call, and measuring an impact on the call quality in a case that the new user joins the call based on the perceived call quality and the network pattern.

Managing conference-calls

Adaptive multi-control unit load balancing in a voice-over-IP system

A Voice-over-IP (VOIP) system includes a plurality of multi-control units (MCUs). A first MCU in the VOIP system hosts a first VOIP session that joins a plurality of conference devices. Based on an impact metric being acceptable, and an alternate MCU accepting to host the VOIP session, the system joins the plurality of conference devices to a replacement VOIP session hosted on the alternate MCU.

A method, system, and/or computer program product improve Voice over Internet Protocol (VoIP) call quality during a VoIP session. A VoIP session is established between an initial focus VoIP node and multiple slave VoIP nodes, where the initial focus VoIP node uses a first type of codec for the VoIP session. A user focus code score (UFCS) describes a VoIP call quality for each of the nodes based on predetermined network conditions related to use of a certain type of codec and nodal hardware specifications. The UFCSs are ranked to identify a highest-ranked VoIP node. The highest-ranked VoIP node is reclassified as a new focus VoIP node for the VoIP session, and the initial focus VoIP node is reclassified as a slave VoIP node. Thereafter, there is a simultaneous switching of 1) the focus and 2) the type of codec used in the VoIP session.

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Doha, Qatar

Diaa Eldin Ali Mohamed Mahmoud Ali