Abstract: A high availability VoIP system interfacing with a PSTN or other TDM network to provide higher availability and better failure recovery wherein the high availability VoIP system includes a plurality of gateways coupled to at least one hub and a proxy table and a call restoration table configured in each of the plurality gateways.

Abstract: The present invention is a method and system for reducing bandwidth usage in a voice over internet protocol (VoIP) network that uses holding sounds such as music or announcements. When a customer call enters the network through a gateway, the call is received by a media server (VMS) and a workflow is started. When the workflow determines that the customer call is to be put on hold, the VMS sends an instruction signal to the gateway, instructing the gateway to provide an on-hold music or announcement to the customer call. When the workflow determines that the customer call is to be taken off hold, the VMS sends a second instruction signal to the gateway and the gateway stops the music or announcements and proceeds to further process the call under the direction of the workflow.

Abstract: Poly(urethane-urea) reaction injection molded compositions having improved processing and lower water absorption are prepared by reacting an isocyanate-terminated prepolymer prepared by reacting 4,4'-MDI or modified 4,4'-MDI and a polyoxypropylene glycol having a molecular weight of from 400 to 2500 with a polyether polyol and a hindered amine or glycol chain extender, in the presence of a urethane-reaction promoting catalyst, optionally including a hydroxyl terminated chain extender and internal mold release agent.