https://devzone.nordicsemi.com/f/nordic-q-a/21998/central-multilink-explanationin the ble multilink central example i&#39;m not understanding where the functions in client_handling.c are exercised some don&#39;t seem to be used in main or client_handling (client_handling_dm_event_handler() for example) Additionally in client_handlingen-USTelligent Community 13Tue, 16 May 2017 13:36:48 GMThttps://devzone.nordicsemi.com/thread/86322?ContentTypeID=1Tue, 16 May 2017 13:36:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0ad626f8-f9de-47f8-b91b-87aeef912a6cSigurd<p>Hi,</p> <p>The <code>client_handling.c</code> was used back in SDK 10 where we had both a <code>ble_app_multilink_peripheral</code> and a <code>ble_app_multilink_central</code> example.</p> <p>But, with SDK 11 the Multi-instance handling of the Service client modules was greatly improved, and the client service discovery handling was moved into the main application context. The <code>ble_app_multilink_central</code> example was modified to demonstrate multiple client instances in a better way. The <code>ble_app_multilink_peripheral</code> example was removed, and <strong>ble_app_blinky</strong>(with the LBS service) replaced the role as the peripheral.</p> <p>The definitions in client_handling.c is therefore no longer being used in SDK 11 and upwards, but client_handling.c is still there for backwards compatibility reasons for those who still uses these defines in their old projects.</p><div style="clear:both;"></div>