Marcel, Finally got some results on those latest rfcomm changes for qualification. Looks like there are a few more problems. :( But we're close. :) TP/RFC/BV-09-C: "Verify that the IUT handles flow control correctly when the Tester, acting as a device conforming to Bluetooth version 1.0B, controls the data flow using the Modem Status Command. The IUT's device role is of no importance." The command and console output: root@jack-00000000:~>./rctest -s -P 1 -b 20 00:A0:96:1F:83:71 rctest[351]: Connected rctest[351]: Sending ... rctest[351]: Send failed. Resource temporarily unavailable(11) The IUT sends data in 5 frames, then stops for aboue 20s, then sends 5 more, then stops, etc. Technically, this test passed because we did stop sending data after the tester send MSC stop to the IUT. But something's clearly not right. There is an hcidump of the session attached. TP/RFC/BV-12-C: "Verify that the IUT handles aggregate flow control correctly when the Tester, acting as a device conforming to Bleutooth version 1.0B, controls the data flow using the Flow Control on/off commands FCon and FCoff. The IUT's device role is of no importance." The command and console output: root@jack-00000000:~>./rctest -s -P 1 -b 20 00:A0:96:1F:83:71 rctest[362]: Connected rctest[362]: Sending ... rfcomm_recv_mcc: Unknown control type 0x18 rfcomm_recv_mcc: Unknown control type 0x28 The IUT does not respond to FCoff with FCoff, and continues sending data. It also does not respond to FCon with FCon. There is an hcidump of the session attached. -Daryl.