Hello, I have about 30 VoIP phones behind a Balance 305. 29 of the phones are Yealink T48s they are can make and receive calls. I have one Yealink cp960, this phone can only receive calls. I have tested it on another network and it can make and receive calls. I have tested other phones in the same port with the same cables and it works.
Welcome to the forum!
Weird. You’ll need to do a network capture on the B305 and see what the heck is going on.
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