Added SettingsObjectID descriptor

Ignore-this: 57d238f1072900fb8955ab4db8bb6640

darcs-hash:20090317130055-1e3d8-c873574ac2ade98009c787da3a22100f98c128c2
Added SIPAddress configuration datatype

Ignore-this: b07f9ce7b20261718fb5e1faf1a10b94

darcs-hash:20090317130218-1e3d8-8ba305300c48bff4fb5e08021a6e3c448eb194e0