Question:  I have 3 HMS-4 base stations that I need to link together, 2 of the bases have HLI-ET2 ethernet modules
but the 3rd base only has an HLI-FBS fiber module.  Can I use an ethernet switch with a fiber port to support connection
of all 3 HMS-4X base stations?
Answer:  That configuration should work. As long as the switch can negotiate Ethernet speed down to 100Mbps on that fiber
connection.  Any 100BASE-X SFP can be used on the HLI-FBS fiber module and on the fiber port of the fiber port of the ethernet
switch.
The user could also connect HXII-BPs, HKB-2X speaker stations or HRM-4X remote stations to a fiber module base using
a fiber port ethernet switch.