PBXBear

What you're looking for is in fact - "IDS+" Integrated Directory Services (the "+" as in many AVAYA/Lucent offers means "over PRI"). We use it to provide one common directory via the phone for 13 nodes.

As Al states it is a green feature.

It works via TSC's, like many of the features of DCS+.

Depending on your teleco provider(s) it MAY be possible to utilize IDS+ over the public network. We use only MCI Option 2 Vision NQUEST features and we have successfully pushed TSC's across our "SDN". But, after two people try to access the directory at the same time - MCI shuts it down beacuse of too many messages going across. Since it sounds like you only have 4 nodes, it might be less of an issue.

We're on a N-5ish release. All G3r's v10 and I believe Communication Manager can push DCS+ via IP. Thus, it may be possible to utilize IDS+ via IP Trunking and not have to worry about Point-To-Points PRI's for a "traditional" DCS+ network.

Hope that helps a bit. Good luck.

-Chris