Wellington,
This is what I have in the office: Avaya IP Office 500 Digital Station and IP Office 500v2 control unit with 4 modules. I hope this answers your question. I also have in the corporate office several of the 1608 phones that work correctly with the system.
Attached is the ping return from when I pinged the gateway address, that did respond. Also attached is what is in my route information from my IP Office manager
