Tom Keating : VoIP & Gadgets Blog
Tom Keating
CTO
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REN 3 tag

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Ring Voltage, REN, VoIP and a Bolt of Blue

In 1999, I wrote a humorous article for CTI Magazine, the precursor to Internet Telephony Magazine, about my adventures with a power outage at TMC that took out our Dialogic MSI analog cards in our PC-PBX. The MSI cards are...
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