https://devzone.nordicsemi.com/f/nordic-q-a/57034/att-mtu-length-s113-nrf52833Hello I am trying to develop an application with NRF52833 development board and s113 softdevice. I want to create a write characteristic which requires 247 ATT-MTU size at a connection interval of 10 ms. Can i achieve this with s113 softdeviceen-USTelligent Community 13Tue, 28 Jan 2020 09:12:53 GMThttps://devzone.nordicsemi.com/thread/231328?ContentTypeID=1Tue, 28 Jan 2020 09:12:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b730abfc-b63a-4b11-89fa-6ee1dee16192Simonr<p>Hi</p> <p><a href="https://infocenter.nordicsemi.com/topic/sds_s113/SDS/s1xx/s113.html">Here<span>&nbsp;</span></a>you can see the key features of the S113 SoftDevice. As you can see, it does support a configurable ATT MTU, so it should not be a problem to develop an application that does this. You can use our<span>&nbsp;</span><a href="https://github.com/edvinand/custom_ble_service_example">custom_ble_service<span>&nbsp;</span></a>example as a template, as it teaches you how to create your own custom services and characteristics.</p> <p>Keep in mind that you can not make a central application using the S113 SoftDevice, so in case you&#39;d like a central application you will have to use SoftDevice S140 instead. Both of these are however compatible with the NRF52833, so it is entirely up to you and what your application needs as to what SoftDevice to use here.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>