Abstract: A method and device are presented for delivering a voicemail message to a voicemail system associated with a user device. A first session initiation protocol (SIP) session may be initiated with a first SIP server. Upon receiving a provisional response from the first SIP server, a second SIP session may be initiated with a second SIP server. A response indicating that a call has been successfully established using either the first SIP session or the second SIP session is received. The SIP session in which the call was not established is terminated. Audio from the voicemail system received via the SIP session in which the call was established is analyzed to determine when the voicemail system may receive the voicemail message. The voicemail message is transmitted to the voicemail system via the SIP session in which the call was established.

Abstract: A telecommunication and network traffic throttle and control and rate deck synchronization system including one or more processors coupled to a communications network. The system is configured to monitor, control, and throttle network traffic and to generate and synchronize rate decks to limit and block unwanted and harmful traffic to optimize performance of and protect telecommunications and network infrastructure. Received routing requests are parsed for subscriber identifiers that have assigned current rate decks. Routing requests are forwarded only for subscribers having unexpired assigned rate decks. When new assigned rate decks are generated with prospective effective times, the current date decks are modified to expire before the effective time, and subscribers are sent URLs having embedded security hashes, which must be downloaded before the current assigned rate decks expire.