Ask some question about the packet size.https://devzone.nordicsemi.com/f/nordic-q-a/12860/ask-some-question-about-the-packet-sizeHI,ALL, in the Blue Core Spec, there are such statement here, L2CAP permits higher level protocols and applications to transmit and receive upper layer data packets (L2CAP Service Data Units, SDU) up to 64 kilobytes in length. Do this SDUen-USTelligent Community 13Wed, 30 Mar 2016 03:11:38 GMTRE: Ask some question about the packet size.https://devzone.nordicsemi.com/thread/48925?ContentTypeID=1Wed, 30 Mar 2016 03:11:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:838df6aa-ea9f-48d5-b4f8-4ccaf3f46956bernerd<p>Thank you , I&#39;m glad you help me. And i am studying the Core 4.2 for know more about the Bluetooth, but it is too long for me(2772 pages) . Could you give me some suggestion to study Bluetooth with Core 4.2 ? Should i read the host volume first (i am reading the Host Volume now without read other volume)?</p><div style="clear:both;"></div>RE: Ask some question about the packet size.https://devzone.nordicsemi.com/thread/48924?ContentTypeID=1Wed, 30 Mar 2016 03:06:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:724295e4-eda8-4a61-b412-01adc5ed47afRK<p>No it has nothing to do with the MTU</p><div style="clear:both;"></div>