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We are trying to configure our Cisco for SIP but after opening all the requited ports we do not have audio. We can call extensions from different locations, just can hear each other outside of our location. The IP phones in-house we can call and hear...
Ok, but does that mean that the older version we are using will work? I read on another post that said older version will not. That link I still have, but I also read that it can work, that link is no longer posted. https://community.cisco.com/t5/fi...
