Problem: Jabber softphone can dial internal (LAD / LAN) numbers OK but fails on external numbers. Gets "Your call cannot be completed as dialed. Please check your directory and dial again." A reboot of the PC temporarily solves this. So does signing out and back in to Jabber.
Solution: Accounts are configured correctly. This took a drastic solution to resolve. User's Jabber account, softphone configuration, and Unity voice mail account had to be deleted. Tim Milan was able to export user's Jabber contacts. We learned the Cisco server only exports internal contacts not NON-LAD / LAN contacts.
After the accounts were removed the Call Manager they were recreated. After that the problem went away.
This is a last resort solution.
Michael M.