当前位置：首页 > news >正文

【android bluetooth 案例分析 03】【PTS 测试】【PBAP/PCE/SGSIT/SERR/BV-01-C】

news 2025/5/13 6:47:08

1. PBAP/PCE/SGSIT/OFFS/BV-01-C

1. 测试项说明：

Please initiate a GATT connection over BR/EDR to the PTS.Description: Verify that the Implementation Under Test (IUT) can initiate GATT connect request over BR/EDR to PTS.

测试项名称：
Please initiate a GATT connection over BR/EDR to the PTS.

测试项描述：
验证被测设备（IUT）是否能够通过 BR/EDR（经典蓝牙）主动发起 GATT 连接请求到 PTS（Protocol Test System）。

2. 基本概念

1. 什么是 GATT？

GATT（Generic Attribute Profile）是 BLE（低功耗蓝牙）中用于设备之间传输数据的通用协议，基于 ATT（Attribute Protocol）实现。

2. 什么是 BR/EDR？

BR/EDR 是“Basic Rate / Enhanced Data Rate”的缩写，也就是经典蓝牙。传统上，GATT 运行于 BLE（即 LE）上，但从 Bluetooth Core v4.1 起，GATT 也可以工作在 BR/EDR 上。

3. 为什么要测试 GATT over BR/EDR？

虽然 GATT 多用于 BLE，但有些场景或设备（比如某些老设备或兼容设备）需要在经典蓝牙上复用 GATT 协议。因此，Bluetooth SIG 定义了这个测试项来确保 IUT 能在 BR/EDR 上传输 GATT 协议。

3. 测试目的

验证被测设备（IUT）是否能够：

使用 BR/EDR（经典蓝牙）连接到 PTS；
正确发起 GATT 连接请求（如发送 MTU 交换请求）；
在 BR/EDR 信道上使用 ATT 协议通信；
满足 GATT over BREDR 的规范要求。

4. 测试流程简述

步骤	动作
1	IUT 与 PTS 建立配对（通过经典蓝牙）
2	IUT 执行 SDP 查询，找到 PTS 提供的 GATT 服务（UUID: `0x1801`）
3	IUT 通过 BR/EDR 打开 L2CAP 固定信道（通常为 0x0004）
4	IUT 发送 ATT 请求（如 Exchange MTU Request）
5	PTS 响应，连接建立成功
6	记录测试结果（通过 / 失败）

5. 测试重点与注意事项

项目	要点
✅ 连接方式	必须是 BR/EDR（经典蓝牙），不能使用 BLE
✅ SDP 查询	IUT 应能找到 GATT 服务的 SDP 记录（Generic Attribute Profile）
✅ L2CAP 信道	使用固定信道 0x0004 建立 ATT 通道
✅ ATT 层	IUT 应发送标准的 GATT 请求，如 MTU 交换、服务发现等
❌ 错误示范	如果 IUT 走了 BLE 的 GATT 路径，则测试会被判为失败
⚠️ 蓝牙协议栈支持	部分蓝牙协议栈（如 Android、BlueZ）默认不支持 GATT over BR/EDR，需要手动适配或扩展

6. 常见失败原因（SERR）

问题	原因
GATT 请求未发出	IUT 没有正确连接或协议栈不支持
使用了 LE 连接	测试要求使用经典蓝牙，不能用 LE
SDP 查询失败	未找到 GATT 服务 UUID
L2CAP 信道错误	未使用 0x0004 或配置不当
没有发送 ATT 数据	上层未触发 GATT 请求流程

7. 调试建议

抓包工具：使用 Ellisys 或 Frontline 观察 HCI 层是否通过 BR/EDR 连接；
确认 ACL 链路类型：应为 classic BR ACL 而非 LE；
查看 SDP 记录：确认 PTS 是否发布了 GATT 服务 UUID；
打印日志：开启协议栈日志，如 BlueZ 可查看 btmon，Android 可用 logcat。

8. 总结

本测试项的关键是：

确保设备在 BR/EDR 上传输 GATT 协议，并能主动连接并通信。

由于很多现代蓝牙协议栈默认只支持 GATT over LE，若设备原生不支持，需要自行扩展协议栈才能通过此项测试。

2. 真实车机侧案例

我们 IUT 测试对象是车机。 android 的协议栈不支持，默认不支持 GATT over BR/EDR。看到这里，是不是有点担心。如果要过这一项测试，是不是要人为改代码，来适配 GATT over BR/EDR。我实际测试了一下。直接是可以通过的。

我这里记录一下车机侧的 btsnoop 日志。看一下为何在协议栈不支持 GATT over BR/EDR 的情况下。还能测试通过。

在这里插入图片描述

发现只有 sdp 的流程，没有后续连接 pbap 的流程。
那我们重点看一下，车机发起 sdp 后， pts. 回复的内容。

# 车机向 pts 查询 Phonebook Access Server 
975	2025-04-25 17:53:59.966042	22:22:96:de:b1:39 (leo 8295 chan)	Vencer_f4:b1:83 (PTS-PBAP-B183)	SDP	29	Sent Service Search Attribute Request : Phonebook Access Server: Attribute Range (0x0000 - 0xffff) # pts 回复如下：
980	2025-04-25 17:53:59.991359	Vencer_f4:b1:83 (PTS-PBAP-B183)	22:22:96:de:b1:39 (leo 8295 chan)	SDP	19	Rcvd Service Search Attribute Response Bluetooth SDP ProtocolPDU: Service Search Attribute Response (0x07)Transaction Id: 0x0000Parameter Length: 5Attribute List Byte Count: 2Attribute Lists [count =  0]Data Element: Sequence uint8 0 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 0Data Value: MISSING     # 这里看到 pts 返回的 数据内容是空的。Continuation State: no (00)

而我们协议栈判断到， pts 的返回的 sdp record 是空的后，就没有继续发起 pbap 的连接。

04-25 17:53:59.140092  9393  9488 D PbapClientStateMachine: mCchPathUsed: false
04-25 17:53:59.140338  9393  9720 I PbapClientStateMachine: Enter Connecting: -2
04-25 17:53:59.140520  9393  9720 D PbapClientStateMachine: Connection state 00:1B:DC:F4:B1:83: 0->1
04-25 17:54:00.009577  9393  9393 I PbapClientStateMachine: onReceiveandroid.bluetooth.device.action.SDP_RECORD
04-25 17:54:00.009815  9393  9393 I PbapClientStateMachine: Received UUID: 0000112f-0000-1000-8000-00805f9b34fb
04-25 17:54:00.009968  9393  9393 I PbapClientStateMachine: expected UUID: 0000112f-0000-1000-8000-00805f9b34fb// 直接返回错误了
04-25 17:54:00.010025  9393  9393 E PbapClientStateMachine: SDP Record fetched status isn't ok - Ignore. status=1

// android/app/src/com/android/bluetooth/pbapclient/PbapClientStateMachine.javaprivate class SDPBroadcastReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {String action = intent.getAction();if (DBG) {Log.i(TAG, "onReceive" + action);}if (action.equals(BluetoothDevice.ACTION_SDP_RECORD)) {BluetoothDevice device =intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);BluetoothDevice sm_device = getDevice();if (sm_device !=null) {if (!device.equals(getDevice())) {Log.w(TAG, "SDP Record fetched for different device - Ignore");return;}} else {Log.d(TAG, "SDP Record get device is null - Ignore");return;}ParcelUuid uuid = intent.getParcelableExtra(BluetoothDevice.EXTRA_UUID);if (DBG) {Log.i(TAG, "Received UUID: " + uuid.toString());Log.i(TAG, "expected UUID: " + BluetoothUuid.PBAP_PSE.toString());}int search_status= intent.getIntExtra(BluetoothDevice.EXTRA_SDP_SEARCH_STATUS,-1);if (search_status != AbstractionLayer.BT_STATUS_SUCCESS) {// 直接在这里返回退出了。Log.e(TAG, "SDP Record fetched status isn't ok - Ignore. status="+search_status);return;}if (uuid.equals(BluetoothUuid.PBAP_PSE)) {// 正常的逻辑，应该走到这里， sdp 完成后，会继续触发 后续连接操作。sendMessage(MSG_SDP_COMPLETE,intent.getParcelableExtra(BluetoothDevice.EXTRA_SDP_RECORD));}}}}}

发现这一项，由于 pts 返回的 sdp record 状态有问题。后续车机干脆没有发起 pbap 的连接。直接 pts软件 pass 了。

3. 正确的 sdp

这里对比分享一个正常，可以建立 pbap 情况下的， sdp 的内容。

# 车机主动发起 sdp 请求
846	2025-04-25 14:08:32.468449	22:22:96:de:b1:39 (leo 8295 chan)	Vencer_f4:b1:83 (PTS-PBAP-B183)	SDP	29	Sent Service Search Attribute Request : Phonebook Access Server: Attribute Range (0x0000 - 0xffff) # pts 回复正确的 sdp record
849	2025-04-25 14:08:32.507350	Vencer_f4:b1:83 (PTS-PBAP-B183)	22:22:96:de:b1:39 (leo 8295 chan)	SDP	255	Rcvd Service Search Attribute Response Bluetooth SDP ProtocolPDU: Service Search Attribute Response (0x07)Transaction Id: 0x0000Parameter Length: 241Attribute List Byte Count: 238Attribute Lists [count =  2]Data Element: Sequence uint8 236 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 236Data ValueAttribute List [count = 10] (Phonebook Access Server)Data Element: Sequence uint8 119 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 119Data ValueService Attribute: Service Record Handle (0x0), value = 0x00090021 (589857)Attribute ID: Service Record HandleData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Service Record Handle (0x0000)ValueData Element: Unsigned Integer 4 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .010 = Data Element Size: 4 bytes (2)Data ValueService Record Handle: 0x00090021Service Attribute: Service Class ID List (0x1), value = Phonebook Access ServerAttribute ID: Service Class ID ListData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Service Class ID List (0x0001)ValueData Element: Sequence uint8 3 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 3Data ValueData Element: UUID 2 bytes0001 1... = Data Element Type: UUID (3).... .001 = Data Element Size: 2 bytes (1)Data ValueValue: UUID: Phonebook Access Server (0x112f)Service Attribute: Protocol Descriptor List (0x4), value = L2CAP -> RFCOMM:2 -> OBEXAttribute ID: Protocol Descriptor ListData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Protocol Descriptor List (0x0004)ValueData Element: Sequence uint8 17 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 17Data ValueProtocol #1: L2CAPData Element: Sequence uint8 3 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 3Data ValueProtocol Entry: L2CAPData Element: UUID 2 bytes0001 1... = Data Element Type: UUID (3).... .001 = Data Element Size: 2 bytes (1)Data ValueValue: UUID: L2CAP (0x0100)Protocol #2: RFCOMM, RFCOMM Channel: 2Data Element: Sequence uint8 5 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 5Data ValueProtocol Entry: RFCOMM, RFCOMM Channel: 2Data Element: UUID 2 bytes0001 1... = Data Element Type: UUID (3).... .001 = Data Element Size: 2 bytes (1)Data ValueValue: UUID: RFCOMM (0x0003)Data Element: Unsigned Integer 1 byte (0 bytes if Nil)0000 1... = Data Element Type: Unsigned Integer (1).... .000 = Data Element Size: 1 byte (0 bytes if Nil) (0)Data ValueRFCOMM Channel: 2 (0x02)Protocol #3: OBEXData Element: Sequence uint8 3 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 3Data ValueProtocol Entry: OBEXData Element: UUID 2 bytes0001 1... = Data Element Type: UUID (3).... .001 = Data Element Size: 2 bytes (1)Data ValueValue: UUID: OBEX (0x0008)Service Attribute: Browse Group List (0x5), value = Public Browse GroupAttribute ID: Browse Group ListData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Browse Group List (0x0005)ValueData Element: Sequence uint8 3 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 3Data ValueData Element: UUID 2 bytes0001 1... = Data Element Type: UUID (3).... .001 = Data Element Size: 2 bytes (1)Data ValueValue: UUID: Public Browse Group (0x1002)Service Attribute: Language Base Attribute ID List (0x6), value = (Lang: en, Encoding: UTF-8, Attribute Base: 0x0100)Attribute ID: Language Base Attribute ID ListData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Language Base Attribute ID List (0x0006)ValueData Element: Sequence uint8 9 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 9Data ValueLanguage #1: Lang: en, Encoding: UTF-8, Attribute Base: 0x0100Data Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueLanguage Code: enData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueLanguage Encoding: UTF-8 (106)Data Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute Base: 0x0100Service Attribute: Bluetooth Profile Descriptor List (0x9), value = Phonebook Access Profile 1.2Attribute ID: Bluetooth Profile Descriptor ListData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Bluetooth Profile Descriptor List (0x0009)ValueData Element: Sequence uint8 8 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 8Data ValueData Element: Sequence uint8 6 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 6Data ValueProfile Descriptor List #1: Phonebook Access Profile, Version 1.2Data Element: UUID 2 bytes0001 1... = Data Element Type: UUID (3).... .001 = Data Element Size: 2 bytes (1)Data ValueValue: UUID: Phonebook Access Profile (0x1130)Data Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueProtocol Version: 0x0102Service Attribute: Service Name (0x100), value = Phonebook Acccess PSEAttribute ID: Service NameData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Service Name (0x0100)ValueData Element: Text string uint8 22 bytes0010 0... = Data Element Type: Text string (4).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 22Data ValueService Name: Phonebook Acccess PSEService Attribute: (PBAP) GOEP L2CAP PSM (0x200), value = 4101 (0x1005)Attribute ID: GOEP L2CAP PSMData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: GOEP L2CAP PSM (0x0200)ValueData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueGOEP L2CAP PSM: 4101 (0x1005)Service Attribute: (PBAP) Supported Repositories (0x314), value = LocalPhonebook SIM SpeedDial Favourites Attribute ID: Supported RepositoriesData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Supported Repositories (0x0314)ValueData Element: Unsigned Integer 1 byte (0 bytes if Nil)0000 1... = Data Element Type: Unsigned Integer (1).... .000 = Data Element Size: 1 byte (0 bytes if Nil) (0)Data ValueSupported Repositories: 0x0f0000 .... = Reserved: 0x0.... 1... = Favourites: True.... .1.. = Speed Dial: True.... ..1. = SIM Card: True.... ...1 = Local Phonebook: TrueService Attribute: (PBAP) Supported Features (0x317), value = Attribute ID: Supported FeaturesData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Supported Features (0x0317)ValueData Element: Unsigned Integer 4 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .010 = Data Element Size: 4 bytes (2)Data ValueSupported Features: 0x000000000000 0000 0000 0000 0000 00.. .... .... = Reserved: 0x000000.... .... .... .... .... ..0. .... .... = Default Contact Image Format: False.... .... .... .... .... ...0 .... .... = Contact Referencing: False.... .... .... .... .... .... 0... .... = X-BT-UID vCard Property: False.... .... .... .... .... .... .0.. .... = X-BT-UCI vCard Property: False.... .... .... .... .... .... ..0. .... = Enhanced Missed Calls: False.... .... .... .... .... .... ...0 .... = vCard Selecting: False.... .... .... .... .... .... .... 0... = Folder Version Counters: False.... .... .... .... .... .... .... .0.. = Database Identifier: False.... .... .... .... .... .... .... ..0. = Browsing: False.... .... .... .... .... .... .... ...0 = Download: FalseAttribute List [count =  9] (Phonebook Access Server)Data Element: Sequence uint8 113 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 113Data ValueService Attribute: Service Record Handle (0x0), value = 0x00090063 (589923)Attribute ID: Service Record HandleData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Service Record Handle (0x0000)ValueData Element: Unsigned Integer 4 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .010 = Data Element Size: 4 bytes (2)Data ValueService Record Handle: 0x00090063Service Attribute: Service Class ID List (0x1), value = Phonebook Access ServerAttribute ID: Service Class ID ListData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Service Class ID List (0x0001)ValueData Element: Sequence uint8 3 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 3Data ValueData Element: UUID 2 bytes0001 1... = Data Element Type: UUID (3).... .001 = Data Element Size: 2 bytes (1)Data ValueValue: UUID: Phonebook Access Server (0x112f)Service Attribute: Protocol Descriptor List (0x4), value = L2CAP -> RFCOMM:2 -> OBEXAttribute ID: Protocol Descriptor ListData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Protocol Descriptor List (0x0004)ValueData Element: Sequence uint8 17 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 17Data ValueProtocol #1: L2CAPData Element: Sequence uint8 3 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 3Data ValueProtocol Entry: L2CAPData Element: UUID 2 bytes0001 1... = Data Element Type: UUID (3).... .001 = Data Element Size: 2 bytes (1)Data ValueValue: UUID: L2CAP (0x0100)Protocol #2: RFCOMM, RFCOMM Channel: 2Data Element: Sequence uint8 5 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 5Data ValueProtocol Entry: RFCOMM, RFCOMM Channel: 2Data Element: UUID 2 bytes0001 1... = Data Element Type: UUID (3).... .001 = Data Element Size: 2 bytes (1)Data ValueValue: UUID: RFCOMM (0x0003)Data Element: Unsigned Integer 1 byte (0 bytes if Nil)0000 1... = Data Element Type: Unsigned Integer (1).... .000 = Data Element Size: 1 byte (0 bytes if Nil) (0)Data ValueRFCOMM Channel: 2 (0x02)Protocol #3: OBEXData Element: Sequence uint8 3 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 3Data ValueProtocol Entry: OBEXData Element: UUID 2 bytes0001 1... = Data Element Type: UUID (3).... .001 = Data Element Size: 2 bytes (1)Data ValueValue: UUID: OBEX (0x0008)Service Attribute: Browse Group List (0x5), value = Public Browse GroupAttribute ID: Browse Group ListData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Browse Group List (0x0005)ValueData Element: Sequence uint8 3 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 3Data ValueData Element: UUID 2 bytes0001 1... = Data Element Type: UUID (3).... .001 = Data Element Size: 2 bytes (1)Data ValueValue: UUID: Public Browse Group (0x1002)Service Attribute: Language Base Attribute ID List (0x6), value = (Lang: en, Encoding: UTF-8, Attribute Base: 0x0100)Attribute ID: Language Base Attribute ID ListData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Language Base Attribute ID List (0x0006)ValueData Element: Sequence uint8 9 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 9Data ValueLanguage #1: Lang: en, Encoding: UTF-8, Attribute Base: 0x0100Data Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueLanguage Code: enData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueLanguage Encoding: UTF-8 (106)Data Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute Base: 0x0100Service Attribute: Bluetooth Profile Descriptor List (0x9), value = Phonebook Access Profile 1.0Attribute ID: Bluetooth Profile Descriptor ListData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Bluetooth Profile Descriptor List (0x0009)ValueData Element: Sequence uint8 8 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 8Data ValueData Element: Sequence uint8 6 bytes0011 0... = Data Element Type: Sequence (6).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 6Data ValueProfile Descriptor List #1: Phonebook Access Profile, Version 1.0Data Element: UUID 2 bytes0001 1... = Data Element Type: UUID (3).... .001 = Data Element Size: 2 bytes (1)Data ValueValue: UUID: Phonebook Access Profile (0x1130)Data Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueProtocol Version: 0x0100Service Attribute: Service Name (0x100), value = Phonebook Acccess PSEAttribute ID: Service NameData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Service Name (0x0100)ValueData Element: Text string uint8 22 bytes0010 0... = Data Element Type: Text string (4).... .101 = Data Element Size: uint8 (5)Data Element Var Size: 22Data ValueService Name: Phonebook Acccess PSEService Attribute: (PBAP) Supported Repositories (0x314), value = LocalPhonebook SIM SpeedDial Favourites Attribute ID: Supported RepositoriesData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Supported Repositories (0x0314)ValueData Element: Unsigned Integer 1 byte (0 bytes if Nil)0000 1... = Data Element Type: Unsigned Integer (1).... .000 = Data Element Size: 1 byte (0 bytes if Nil) (0)Data ValueSupported Repositories: 0x0f0000 .... = Reserved: 0x0.... 1... = Favourites: True.... .1.. = Speed Dial: True.... ..1. = SIM Card: True.... ...1 = Local Phonebook: TrueService Attribute: (PBAP) Supported Features (0x317), value = Attribute ID: Supported FeaturesData Element: Unsigned Integer 2 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .001 = Data Element Size: 2 bytes (1)Data ValueAttribute ID: Supported Features (0x0317)ValueData Element: Unsigned Integer 4 bytes0000 1... = Data Element Type: Unsigned Integer (1).... .010 = Data Element Size: 4 bytes (2)Data ValueSupported Features: 0x000000000000 0000 0000 0000 0000 00.. .... .... = Reserved: 0x000000.... .... .... .... .... ..0. .... .... = Default Contact Image Format: False.... .... .... .... .... ...0 .... .... = Contact Referencing: False.... .... .... .... .... .... 0... .... = X-BT-UID vCard Property: False.... .... .... .... .... .... .0.. .... = X-BT-UCI vCard Property: False.... .... .... .... .... .... ..0. .... = Enhanced Missed Calls: False.... .... .... .... .... .... ...0 .... = vCard Selecting: False.... .... .... .... .... .... .... 0... = Folder Version Counters: False.... .... .... .... .... .... .... .0.. = Database Identifier: False.... .... .... .... .... .... .... ..0. = Browsing: False.... .... .... .... .... .... .... ...0 = Download: FalseContinuation State: no (00)