Reading thru the documentation of the S-100, I did not find a specific answer to this:
Is it possible to have a DHCP running on one network interface while the other is a member of an existing infrastructure?
The idea behind this is to separate the data from the phone network. The phones should get the addresses and provisioning info from the PBX while not interfering with the existing DHCP servers.
Is this the purpose of the dual mode?