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A usual approach would be to use Rav2SAP for announcements, but this software makes it difficult to bind to a specific network card, is unable to read text files and doesn’t save the work.
To speed up this process, consider using the SAPAnnouncer.exe found attached to this solution. It reads any text files in a directory and announces them:
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Only two questions are asked - which network interface(s) to transmit on, and which directory has the .txt files that should be announced. The .txt file should contain valid SDP(s) separated with new lines:
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