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What’s the Difference Between VoIP Cards and VoIP ATA Adapters?
Jay Brant • Jan 21, 2026
We’ve been helping businesses with VoIP for two decades. Over that time, VoIP has changed a lot.
But one thing that hasn’t changed is that people want to integrate existing analog devices into VoIP systems.
While the PSTN has largely been superseded by VoIP and cellular telephony, there are still a great number of analog devices like telephones and fax machines that
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