I thought I'd pass this on. If you're running Hyena on a 2K or 2K3 domain and also have Cisco Unity installed you can add the users extention to the display table.

1. Go to Object Manager Configuration
2. Co to the Custom tab
3. Change the Directory Object Type to Active Directory User
4. Click on New...
5. Enter CiscoEcsbuDtmfId in the Attribute Directory Name field
6. Enter a Display Title (Extension is a good one)
7. Set the Directory Data Type to ADSTYPE_NUMERIC_STRING
8. Set the Attribute Options to Single value attribute
9. Click OK

Now you can add this field to your All User Query Types and you now have a very handy phonelist!