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= Introduction =
= Introduction =
VOTER is a completely connection-less UDP-based protocol (using IANA-assigned well-known port 667, originally assigned to me for a project I was doing for the United States Federal Election Commission, which, of course, deals mainly with an entirely different kind of voting). It provides for transmission of audio signals from remote radio receivers, along with ultra-precise (GPS-based) timing information and signal quality, allowing synchronization of multiple signals at the "head" end (hereinafter referred to as the "host") of the system and selection of which signal to use based upon the signal quality information and the consistency thereof. Audio and timing information may also optionally be sent back the remote location (hereinafter referred to as the "client") by the host to facilitate a multiple-site simulcast transmission system. In addition, it may serve as a simple, low overhead audio stream protocol for general-purpose (non-GPS-based timed) purposes.
[[VOTER]] is a completely connection-less UDP-based protocol (using IANA-assigned well-known port 667, originally assigned to me for a project I was doing for the United States Federal Election Commission, which, of course, deals mainly with an entirely different kind of voting). It provides for transmission of audio signals from remote radio receivers, along with ultra-precise (GPS-based) timing information and signal quality, allowing synchronization of multiple signals at the "head" end (hereinafter referred to as the "host") of the system and selection of which signal to use based upon the signal quality information and the consistency thereof. Audio and timing information may also optionally be sent back the remote location (hereinafter referred to as the "client") by the host to facilitate a multiple-site simulcast transmission system. In addition, it may serve as a simple, low overhead audio stream protocol for general-purpose (non-GPS-based timed) purposes.
Security is provided by a Challenge/Response authentication technique using CRC-32 based digest information. Although it is by no means a terribly secure method (it is not even close to cryptographically-strong), it at least it provides somewhat of a deterrent for those attempting to circumvent the security.
Security is provided by a Challenge/Response authentication technique using CRC-32 based digest information. Although it is by no means a terribly secure method (it is not even close to cryptographically-strong), it at least it provides somewhat of a deterrent for those attempting to circumvent the security.