OK I think you are trying to connect an IP telephone the looks and acts like a analog station, correct?
The Zoom phone should come with a disc for setup. You will need to set it up with an IP address/Subnet/gateway/extension number/domain info etc....
Once you do that you will need to make sure you have a 3rd party SIP phone licence in the 8100.
The 8100 will also need to have an IPLA card, an ME50 and the associated programming assigned.
You then assign the extension number to an unassigned port in the 8100, take care not to use ports above your max capacity (64/256/728).
If this is what you have, I'm not sure it will even work... let us know. https://www.google.com/products/cat...4pTq_NAZKtgQeN5MGRCw&ved=0CGkQ8wIwAQ