https://devzone.nordicsemi.com/f/nordic-q-a/48403/negociating-mtu-and-modifying-gap-event-length-while-connectedHello, I am working with nRF52832 , a soft based on the NUS service and SDK 15.2 ( S132) . In the aim of reducing the current comsumption , I want to modify the throughput between a central NUS and a peripheral NUS without re-initializing BLE , justen-USTelligent Community 13Tue, 11 Jun 2019 15:03:10 GMThttps://devzone.nordicsemi.com/thread/192131?ContentTypeID=1Tue, 11 Jun 2019 15:03:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:13114df1-3f7b-4712-b07a-0e684a996f8ehaakonsh<ol> <li>You can&nbsp;initiate a&nbsp;<a title="sd_ble_gattc_exchange_mtu_request" href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v6.1.1/group___b_l_e___g_a_t_t_c___f_u_n_c_t_i_o_n_s.html?cp=3_4_1_1_2_2_2_6#ga269894b0415de8c4ae76343b74f6e655">sd_ble_gattc_exchange_mtu_request</a>, but there are some BLE stacks out there that do not expect a peripheral to initiate an MTU exchange request, and they might not be able to give you your wanted MTU size. In most use-cases, this is fine though. It will definitely not be a problem between two nordic devices.</li> <li>Call&nbsp;<a title="sd_ble_gap_data_length_update" href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v6.1.1/group___b_l_e___g_a_p___f_u_n_c_t_i_o_n_s.html?cp=3_4_1_1_2_1_2_14#gac4a6ef5c106107eb2a1707bb26f3245c">sd_ble_gap_data_length_update</a>.&nbsp;</li> </ol><div style="clear:both;"></div>