[asterisk-users] Which LDAP OID for iphones

Hello,

I'm new to LDAP.
I've read Device class exists (oid 2.5.6.14) in rfc2256.
I've heard a Pluggable Device sub-class (a device with a MAC address) also exists though I can't find its OID at the moment.

1. Does any standard class specifically defines IP Phones or SIP hardphones or ATAs or Trunk lines ? What's their OID ?

2. How does one can find by himself if such classes exist ?
I discovered this http://www.oid-info.com , there might be other sources.

3. Beside that, would you even try to use LDAP to store Resources data ?
Many use it for User data but what about Resources (Trunk lines, ...) ?
Is it worth the effort ?

Cheers