https://devzone.nordicsemi.com/f/nordic-q-a/10107/gazell-host-addressHi, Each Gazell device has unique address identifier (i.e. base address + prefix) mapped for each pipe. How about the host? For example: Device that transmits on pipe 0 has a default address of 0x0D0A070401, how does it know the destination addressen-USTelligent Community 13Fri, 06 Nov 2015 10:18:51 GMThttps://devzone.nordicsemi.com/thread/37485?ContentTypeID=1Fri, 06 Nov 2015 10:18:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:50cffe65-4906-4565-991b-77bcb0d72e00H&#229;kon Alseth<p>Hi,</p> <p>In plain gzll, you need to share this configuration between the host and the device. They both have to know the address they are supposed to communicate on.</p> <p>In NRF_GZP, which is a pairing library on top of gazell, the unique address is negotiated using a &quot;pairing RF PIPE&quot;. This is then known on both sides, and the host will transfer a unique address to the device, then open this RF PIPE. The device receives this in the ACK payload, then sets this on it&#39;s RF PIPE.</p> <p>Then you are paired, and you now have a unique RF PIPE address to communicate with the host on.</p> <p>Cheers, Håkon</p><div style="clear:both;"></div>