[Bluez-devel] About bluetooth 2.1

Hi all,
I've read about optimized inquiry in bluetooth 2.1, If I understood 
correctly the inquiry return remote device name and services list 
information of the discovered remote devices.
In current version to obtain the same result I've to make an inquiry a 
name request and a sdp query for every remote device discovered.
My question is, given that the new protocol is compatible with the old, 
if I make an inquiry using a 2.1 dongle with blueZ I don't need to make 
name and service  discovery or it's required because the optimized 
inquiry works only between devices with 2.1 version?

many thanks
Fabrizio

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