Yes, you will need to have a SIP URI in the proxyAddress attribute. This is a Microsoft design that Jabber is integrating with, not Cisco-driven behavior. The Office suite and the SharePoint DLL query for the SIP URI and then feed this to a local API that Jabber registers to on the local PC. Office feeds the URI to that API, Jabber checks the contact list and if necessary does a temporary presence subscription to get the presense and contact information (e.g. phone numbers to call). This is fed back to Office through the API which then gets populated in the Persona Menu.
LDAP authentication is psuedo-required for other reasons, mainly the sanity of everyone involved by providing a single password. Not doing LDAP sync/auth is a great way to generate a ton of helpdesk tickets. There are some situations that make LDAP sync/auth flat-out mandatory but the Enhanced Directory Integration (EDI) of Jabber for Windows has alleviated this to some extent because Jabber can use the Windows ADSI to do queries instead of doing a native LDAP bind.
I would challenge you to think of reasons why you shouldn't do LDAP sync/auth; I would be surprised to hear of a legitmate one. This is esspecially true in CUCM 9.x where you can still have local users in addition to the LDAP-synced ones; it's no longer all-in or all-out.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
CUCM Database Replication is an area in which Cisco customers and
partners have asked for more in-depth training in being able to properly
assess a replication problem and potentially resolve an issue without
involving TAC. This document discusses the bas...