[cisco-voip] DHCP and Cisco Phones

[Michael Back]

I am trying to get a handle on how DHCP works with the cisco phones.  I
know that you configure option 150 in the scope so that a phone can get
to TFTP for its config.  The reason I am asking is this:  we have voice
and data VLANs each pointing to different servers for DHCP.  When our
phones get unplugged from a switch with a voice VLAN and get plugged
into a switch without a voice VLAN, they get an address from the wrong
server, but still register to CallManager.  How does that happen?  I
hope this isn't too dumb of a question...

Thanks.