https://devzone.nordicsemi.com/f/nordic-q-a/44314/sdk-macros-and-max-number-of-connections-in-sdk-15-3In previous SDKs (e.g. version 15.0) the following macros were defined in app_util.h As described in this post these needed to be modified to support more than 15 connections. I recently upgraded to SDK 15.3. In SDK 15.3 I noticed these macrosen-USTelligent Community 13Sat, 02 Mar 2019 13:06:18 GMThttps://devzone.nordicsemi.com/thread/173817?ContentTypeID=1Sat, 02 Mar 2019 13:06:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9e72c7cc-6043-41c2-ba94-745edabe543fJakub Rzeszutko<p>Hi</p> <p>It was updated to 32 without any particular reason.</p><div style="clear:both;"></div>