Hi All, I have a stlc2500c which is a Bluetooth 1.2 chip. When debuging function 'hci_connect', i found the hci link type of the arguments was SCO_LINK, because i enabled 'lmp_esco_capable' in my kernel, it call 'hci_setup_sync' to setup eSCO link. struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 auth_type) { ..... if (lmp_esco_capable(hdev)) { hci_setup_sync(sco, acl->handle); } else { hci_add_sco(sco, acl->handle); } } -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html