Our company AD contains four-digit direct dial extension values in the ipPhone field. Noticed that the AB server was complaining about "Unmatched number" for every user, so I went ahead and added an application normalization rule in my Company_Phone_Number_Normalization_Rules file. The errors went away, so I'm assuming that AB server is now picking them up, but they are not apparent in our MOC07 clients when viewing the contact card.
Hunted around, and the only thing I could find was a reference in the LCS 2005 AB guide that says this gets used for the
IPPhoneNumber and IPTelUri. But I can't find any mention of what clients use this data and where. Anyone know?