I read that with the correct firmware, M1XX, an IP5000 series phone will register with a BIPU. Has anyone done this, and more specifically, do you still have the VLAN tagging options that are on the third page of the network programming options?
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I have not done it. But I read in the IP5000 technical overview that you are able to connect it to a BIPU on a CIX40,100,200 and 670 running R3.0 software and above and you should be able to program FB21 to FB24 for the VLAN's
The handset will only work as a 2 line LCD handset.