Add support for Online Directories lookup

[RomanK]

Hi Alan,

We use it for "in house" CRM-system, but I believe it is possible for any CRM. The code is very simple - you just need to look up for CustomerName by the phone number in your Contacts table of your CRM database. And then return XML response like mentioned above. ~1 day of work if you have some programming skills.

But you'll need Gigaset VoIP phones (we use C610A IP and C530A IP).