M22
GSM / GPRS Wireless Module
Release Notice
Rev. 1.20
May. 2004
COPYRIGHT BENQ Corporation
This document contains proprietary technical information which is the property of BenQ Corporation
and is issued in strict confidential and shall not be disclosed to others parties in whole or in parts
without written permission of BenQ Corporation
The documents contain information on a product, which is under development and is issued for customer evaluation purposes only.
BENQ may make changes to product specifications at any time, without notice.
BenQ Corporation.
Networking & Communications BG
18 JiHu Road, Nei-Hu, Taipei 114, Taiwan, R.O.C.
Tel: +886-2-2799-8800
Fax: +886-2-2799-8332
http://www.benq.com
©2004 BenQ Corporation.
M22 Release Note
1
Confidential Property
Version: 1.20 – 2004/5/31
Bug-Fixed
V0.01 - V0.02
1 Pull ROW4 will make module reboot.
V0.02 - V0.03
1 Pull ROW4 will make module reboot.
2 "LD" phonebook reverses order when G2 is restarted.
3 Cannot write SMS to SIM in PDU mode with size>=158 (+CMGW)
V0.03 - V0.04
1 None
V0.04 - V0.05
1 CNMI response error after initial setting
2 "AT$FBT=4,0,1" can't turn off auxiliary audio path in M32
3 Try to connect the network again when AT+COPS=0 fail
4 Change the response form "error" to "ok" of the second execute of +CPIN
5 Set band mode as 1900, but can camp on 1800's network
6 Make CGAATT can only be set as (1,0) (0,1)
7 During low temperature the handset always loses camp when enters deep sleep mode
8 Module will auto power on after use AT$poweroff to turn it off.
9 CSD call : Transparent mode data call
V0.05 – V1.00
1 AT$poweroff 時, Layer 1 的 LDO 沒有關掉.
2 AT$EXC=1 not work
3 Enable L1_NEW_AEC for M22.
4 提供 poweroff Pin : IO13+ROW4
©2004 BenQ Corporation.
M22 Release Note
2
Confidential Property
Version: 1.20 – 2004/5/31
V1.00 – V1.10
1 Make sure the DCD is workable in GPRS mode.
2 If PC enter suspend mode, M32 will not pull down the DCD of UART.
3 Fix input "at+cnmi" then "ENTER", it can't input command anymore.
V1.10 – V1.20
1 FIR coefficients will be tampered to incorrect value when switch audio path.
2 Phonebook 的中文字會變亂碼! 新增支援 UCS2 head 81 type.
©2004 BenQ Corporation.
M22 Release Note
3
Confidential Property
Version: 1.20 – 2004/5/31
Features-Added
V0.01 - V0.02
1 None
V0.02 - V0.03
1 Add New Aupath AT$AUPATH=6,1 for audio implementation.
V0.03 - V0.04
1 None
V0.04 - V0.05
1 SMS 可以設置成已讀未讀.
2 Add "AT$AUGAIN?" command to query the sidetone/mic/speaker gain
3 產生摘機 / 忙線音: AT+GDT
4 Add new at command to convert UNICODE to GB2312
5 Change "RING" message frequency: AT$TRING
6 Use IO12 to implement: AT$VCD
V0.05 – V1.00
1 AT+CLVL save the audio speaker volume structure to the FFS.
Add $AUFIR at command for AUDIO_SPEAKER_FIR coefficient amend in each audio path.
2 這一個版本的指令是 AT$AUFIR=<parameter:0-30>, <value>
3 Add $AUVAD at command to set & query audio VAD value in AEC.
4 Add $AUABS at command to set & query audio ABS value in AEC.
5 ROW4, IO13 and AT$HRST=1 可以 power off module.
V1.00 – V1.10
1 "AT$AUVOL?" query the speaker volume level in audio path.
2 Add TCP/IP function (M2M)
更改 M22 default FIR value 為 AT$AUFIR=65514, 65424, 65381, 65389, 65399, 194, 713, 593,
444, 1416, 1206, 65526, 1481, 4031, 63490, 16384, 63490, 4031, 1481, 65526, 1206, 1416, 444,
3 593, 713, 194, 65399, 65389, 65381, 65424, 65514
4 Add $AUFIR at command for AUDIO_SPEAKER_FIR coefficient amend in each audio path.
©2004 BenQ Corporation.
M22 Release Note
4
Confidential Property
Version: 1.20 – 2004/5/31
這一個版本的指令是 AT$AUFIR=<value 0>, <value 1>, <value 2>, <value 3>, <value 4>, <value
5>, …..,<value 30>
V1.10 – V1.20
1 AEC parameters can't become effective immediately using by AT$AUAEC.
2 Make PPP can always receive "+++" from UART in DTI lock state
3 Add $AUSMOOTH setting the smoothing coefficient in AEC.
4 Add $AULEVELMAX setting the maximum attenuation level in AEC.
©2004 BenQ Corporation.
M22 Release Note
5
Confidential Property
Version: 1.20 – 2004/5/31