Chonghan CH-M3 User manual

2019-9-20
Chonghan CH
-M3
Wireless Modem
User manual
Chonghan Wireless Modem Series
User manual
Samuel
CHONGHAN CO., LTD.

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崇瀚科技 Chonghan
Power by Chonghan

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Important Notice
Due to the nature of wireless communications, transmission and reception of data can never
be guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost. Although
significant delays or losses of data are rare when wireless devices such as the Chonghan Wireless
device are used in a normal manner with a well‐constructed network, the Chonghan Wireless
device should not be used in situations where failure to transmit or receive data could result in
damage of any kind to the user or any other party, including but not limited to personal injury,
death, or loss of property. Chonghan Wireless accepts no responsibility for damages of any kind
resulting from delays or errors in data transmitted or received using the Chonghan Wireless device,
or for failure of the Chonghan Wireless device to transmit or receive such data.
Safety and Hazards
Do not operate the Chonghan Wireless device in areas where blasting is in progress, where
explosive atmospheres may be present, near medical equipment, near life support equipment, or
any equipment which may be susceptible to any form of radio interference. In such areas, the
Chonghan Wireless device MUST BE POWERED OFF. The Chonghan Wireless device can transmit
signals that could interfere with this equipment. Do not operate the Chonghan Wireless device in
any aircraft, whether the aircraft is on the ground or in flight. In aircraft, the Chonghan Wireless
device MUST BE POWERED OFF. When operating, the Chonghan Wireless device can transmit
signals that could interfere with various onboard systems.
Note: Some airlines may permit the use of cellular phones while the aircraft
is on the ground and the door is open. Chonghan Wireless device may be
used at this time.
The driver or operator of any vehicle should not operate the Chonghan Wireless device while
in control of a vehicle. Doing so will detract from the driver or operator’s control and operation of
that vehicle. In some states and provinces, operating such communications devices while in control
of a vehicle is an offence.
Limitations of Liability
This manual is provided "as is". Chonghan Wireless makes no warranties of any kind, either
expressed or implied, including any implied warranties of merchantability, fitness for a particular
purpose, or infringement. The recipient of the manual shall endorse all risks arising from its use.
The information in this manual is subject to change without notice and does not represent a
commitment on the part of Chonghan Wireless. CHONGHAN WIRELESS AND ITS AFFILIATES
SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL DIRECT, INDIRECT, SPECIAL, GENERAL,
INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES INCLUDING, BUT NOT
LIMITED TO, LOSS OF PROFITS OR REVENUE OR ANTICIPATED PROFITS OR REVENUE ARISING OUT
OF THE USE OR INABILITY TO USE ANY CHONGHAN WIRELESS PRODUCT, EVEN IF CHONGHAN
WIRELESS AND/OR ITS AFFILIATES HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR
THEY ARE FORESEEABLE OR FOR CLAIMS BY ANY THIRD PARTY.

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Notwithstanding the foregoing, in no event shall Chonghan Wireless and/or its affiliates
aggregate liability arising under or in connection with the Chonghan Wireless product, regardless
of the number of events, occurrences, or claims giving rise to liability, be in excess of the price paid
by the purchaser for the Chonghan Wireless product.
Copyright
©2010-2019 Chonghan Co., Ltd. All rights reserved.
Trademarks
"Chonghan®" is filed or registered trademark of Chonghan Co., Ltd. in P.R.China and/or in
other countries.
Windows® is a registered trademark of Microsoft Corporation.
QUALCOMM® is a registered trademark of QUALCOMM Incorporated. Used under license.
Other trademarks are the property of the respective owners.
Contact Information
Company
Chonghan Co., Ltd.
Sales
Desk
Phone [phone]
Hours 8:30 AM to 6:00 PM GMT+8
Email [email protected]
FAX [phone] x 805
Post Floor 2,Building 14,Nangang First Industrial Area, Songbai Road, Nanshan District,
Shenzhen, Guangdong, China (518000)
Web http://www.szchonghan.com/

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Contents
Important Notice...............................................................................................................................3
Safety and Hazards............................................................................................................................3
Limitations of Liability .......................................................................................................................3
Copyright...........................................................................................................................................4
Trademarks........................................................................................................................................4
Contact Information..........................................................................................................................4
Contents ............................................................................................................................................5
1. Overview ...................................................................................................................................7
1.1. Document History .........................................................................................................7
1.2. References.....................................................................................................................7
1.3. Abbreviations ................................................................................................................7
1.4. Products List ..................................................................................................................8
1.5. Presentation Rules ........................................................................................................8
1.6. AT Command Syntax......................................................................................................8
2. Introduction ..............................................................................................................................8
2.1. Features.........................................................................................................................9
2.2. Application ....................................................................................................................9
3. Device Connection ....................................................................................................................9
4. Commonest Command ...........................................................................................................11
5. SMS Function ..........................................................................................................................11
5.1. GSM/GPRS/LTE SMS Function .....................................................................................11
5.1.1. GSM/GPRS/LTE Message Relate Command ....................................................11
5.1.2. GSM/GPRS/LTE Query SMS Center..................................................................11
5.1.3. GSM/GPRS/LTE ASCII Message........................................................................12
5.1.4. GSM/GPRS/LTE PDU Message .........................................................................12
5.1.5. GSM/GPRS/LTE Send long letter......................................................................13
5.1.6. GSM/GPRS Receive SMS..................................................................................15
5.2. SMS Process ................................................................................................................16
6. TTS voice broadcast function ..................................................................................................16
6.1. Judgement operator....................................................................................................16
6.2. UNICODE encoding mode ...........................................................................................17
6.3. GBK encoding mode....................................................................................................17
7. CSD ..........................................................................................................................................17
7.1. Relate Command.........................................................................................................17
7.1.1. Modem Initial Command ................................................................................17
7.1.2. Server Initial ....................................................................................................17
7.1.3. Client Dial A Data Call......................................................................................18
7.1.4. Server Manual Answer ....................................................................................18
7.1.5. Communication Operate Command ...............................................................18
7.1.6. Hang Up...........................................................................................................18
8. Reboot.....................................................................................................................................18
9. Three-view Drawing ................................................................................................................18

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10. Product List......................................................................................................................19

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1. Overview
This user guide describes the CH-M3 series wireless modem. The aim of the manual is to ease
the test, install and disposition.
Note: Though all features are documented in this manual, new features
may still be in beta stage at publication and therefore may not yet be
validated. Please refer to the Customer Release Note for complete and
detailed information regarding beta and validated features at time of
release.
1.1. Document History
Version Date Comments Author
1.00 2016-09-19 Initial Release Version. Lei Dong
2.00 2019-03-11 Renew command presentation rules. Samuel
2.01
2019-04-26 Update network support. Samuel
2.10
2019-06-25 Update TTS description. Samuel
3.00
2019-07-11
Remove ppp function.
Samuel
3.01
2019-09-10
Remove old command &w z.
Samuel
3.02
2019-09-12
Update product list.
Samuel
3.03
2019-09-20
Add USB product.
Samuel
1.2. References
CHONGHAN CHM1 WIRELESS MODEM QUICKSTART ENG
1.3. Abbreviations
abbr.
Full name
APN
Access Point Name
DAC Digital Analog Converter
GGSN Gateway GPRS Support Node
GPRS General Packet Radio Service
IP Internet Protocol
KB
Kilobyte
MCC
Mobile Country Code
MNC
Mobile Network Codes
MS
Mobile Station
PDU
Protocol Data Unit
PLMN
Public Land Mobile Network
RSSI
Received Signal Strength Indication
SMA Small Adapter
SMS Short Message Services

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1.4. Products List
Product
Description
CH-
M3G2Q2 GPRS
GSM850,EGSM900,DCS1800,PCS1900
Support:China Mobile Network RS232/RS485/TTL/USB
CH-
M3G7Z19 LTE
GSM: B3, B8
TD-SCDMA: B34/B39
FDD-LTE :B1/B3
TDD-LTE :B38/B39/B40/B41
CDMA 1X:800M
CDMA EVDO: 800M
WCDMA: B1
Support China Mobile, China Unicom, China
Telecom network
RS232/RS485/TTL/USB
1.5. Presentation Rules
The AT commands ignore case. For recognizable, the lowercase for input and uppercase for
respond. For example:
at<cr> // input command
OK // device response
The send mode support all character send and receive, other mode only below valid:
Type
Value
Describe
Printable
0x20 ~ 0xfe <0x20> … <0xfe>
Carriage Return
0x0d
<cr>
Line Feed
0x0a
<lf>
transmit
0x1a
<ctrl+z>
Escape
0x1b
<esc>
1.6. AT Command Syntax
at+xxx=?<cr> // returns the list of parameters and value ra
nges
at+xxx=yyy<cr> // sets user-definable parameter values
at+xxx?<cr> // returns the currently set value
at+xxx<cr> // execution command
Note: the AT command not case-sensitive, prefix by at and terminate by
<CR>.
2. Introduction
With the development of wireless communication technologies, wireless products are being
adopted in numerous industrial and civilian fields. Shenzhen Chonghan Co., Ltd. a leader of wireless
communication equipment manufacturer releases the CH-M3 Series Wireless Modems, which
support various frequency bands of GPRSLTE, and provide industrial terminal solutions for
2.5G/2.75G communication. As a wireless modem, it support AT command set via RS-232/RS-

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485/TTL interface.
CH-M3 series wireless modem adopts industrial level modules, specially designed for the
complicated industrial environment which compatible with EMC, and will be your best choose of
wireless communication.
2.1. Features
AT command interface
Support GPRS/LT E
Support Voice, SMS and CSD
Dial up, data communication
Support APN or VPDN
LED: power, ring, data
Interface level: RS232/RS485/TTL
Watchdog(software and hardware)
Steel shell for anti-electromagnetic interference
2.2. Application
Remote Data Monitor and Control
Water, gas and oil flow metering
AMR (automatic meter reading)
Power station monitoring and control
Remote POS (point of sale) terminals
Traffic signals monitor and control
Fleet management
Power distribution network supervision
Central heating system supervision
Weather station data transmission
Hydrologic data acquisition
Vending machine
Traffic info guidance
Parking meter
Telecom equipment supervision (Mobile base station, microwave or optical relay station)
Oil field data acquisition
Warehouse supervision
3. Device Connection
Interface Description Outlook
LED
PWR
RING
DATA
Antenna
50Ω/SMA/Female
Power
Φ
5.5mm/2.5mm, 5~48V (suggest12V)
Serial Port
DB9 (RS232/RS485/TTL)

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SIM 1.8/3.3V
PIN
RS-232
RS-485
Data Interface
1
NC (Power for Option)
NC (Power for Option)
2
TXD
B
3
RXD
A
4 NC NC
5 GND GND
6 NC NC
7
NC NC
8
NC NC
9
NC
NC
Open the back cover, insert SIM/UIM card, connect the modem to PC via RS-232 serial cable,
assemble the antenna, power adapter, at last, power on.
Note: Don’t insert or remove the SIM/UIM card in the power on status.
Open SSCOM and click the lower right corner to "Hide". Click the send instruction in turn.
Note: there is a return value and then the next instruction operation.

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Note: the Chonghan Wireless Modem port properties factory default is
115200/8/n/1/0, as above picture.
4. Commonest Command
at<cr> // return OK
at&f<cr> // restore parameters to factory default
at+csq<cr> // signal query
at+cxxcid<cr> // display card ID
at+creg?<cr> // verify the network registration status
at+ipr?<cr> // query device baud rate
at+ipr=115200<cr> // baud rate setting, support 115200/57600/38
400/19200/9600/4800/2400/1200
atd13612345678;<cr> // voice call
atd13612345678<cr> // data call
ata<cr> // incoming call answer
+++ // switch data mode to command mode
ato<cr> // switch command mode back to data mode
ath<cr> // hang up
5. SMS Function
5.1. GSM/GPRS/LTE SMS Function
The follow section fit for : GSM/GPRS/LTE series modem.
5.1.1. GSM/GPRS/LTE Message Relate Command
at+cmgf=1<cr> // setting ASCII mode
at+cmgl="all"<cr> // query the SMS list
at+cmgr=n<cr> // read the SMS, location value is n
at+cmgd=n<cr> // delete the SMS, location value is n
5.1.2. GSM/GPRS/LTE Query SMS Center
at+csca?<cr> // query the SMS center number which auto get

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from network
+CSCA : "[phone]" , 145
OK
5.1.3. GSM/GPRS/LTE ASCII Message
at&f<cr> // Reply defaults
OK
ate0<cr> // Close display
OK
at+cscs="gsm"<cr> // setting SMS character set
OK
at+cmgf=1<cr> // setting SMS format
OK
at+cmgs="13691978232"<cr> // destination number
> www.szchonghan.com→// message by ASCII sets, terminate character
"→" means ctrl+z or <0x1a>
+CMGS：xxx // message stamp
OK
Note:1.f no message stamp return, please resend the message again;2. LTE
series: China Mobile, China Unicom, China Telecom Send text messages in
consistent format
5.1.4. GSM/GPRS/LTE PDU Message
at&f<cr> //Reply defaults
OK
ate0<cr> //Close display
OK
at+cscs="ucs2"<cr> // setting SMS character set
OK
at+cmgf=0<cr> // setting SMS format
OK
at+cmgs=26<cr> // PDU length ( Byte ), exclude the initial "0
0" and terminate character <0x1a>
> 0031000b813196918732f20008a70c004100420043004400310032<0x1a>
// Unicode code, content "ABCD12", end by (0X1
A)
+CMGS：xxx // respond message reference
OK
Note: if no message stamp return, please resend the message again; 2. LTE
series: China Mobile, China Unicom, China Telecom Send text messages in
consistent format
PDU simple description
Code
Comment
0031000b81 Initial
3196918732f2 Destination
0008a7
Ext
0c
Length
0041 0042 0043 0044 0031 0032
Content

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5.1.5. GSM/GPRS/LTE Send long letter
at&f<cr> //Reply defaults
OK
ate0<cr> //Close display
OK
at+cscs="ucs2"<cr> // Set SMS coding
OK // Return value
at+cmgf=0<cr> // Set Unicode mode
OK // Return value
at+cmgs=132<cr> // PDU coding length
> 0051000b813196918732f20008a7760500032302014e1c98ce591c653e82b153436811ff0c66f45
439843dff0c661f598296e830025b9d9a6c96d58f6699996ee18def300251e47bab58f052a8ff0c73
8958f651498f6cff0c4e00591c9c7c9f99821e300286fe513f96ea67f39ec491d17f15ff0c7b118be
d76c876c86697999953bb3002<0x1a>
// The content of the message "input Unicode e
ncoding the fireworks thousand trees, more tr
ees, stars like rain. BMW carving. Fung sound,
its full light, night ichthyosaurs dance. Cho
ngchong golden thread, laughter floats to." T
he terminator is <0x1a>
+CMGS：NNN // The return value, NNN serial number
OK // Return value
at+cmgs=68<cr> // PDU coding length
> 0051000b813196918732f20008a7360500032302024f1791cc5bfb4ed65343767e5ea6ff0c84e67
13656de9996ff0c90a34eba53745728ff0c706f706b961173ca59043002<0x1a>
// The content of the message "Unicode encodin
g the input he found the degreeses, suddenly l
ook back, that person but in the lights dim."
The terminator is <0x1a>
Note: if no message stamp return, please resend the message again; 2. LTE series:
China Mobile, China Unicom, China Telecom Send text messages in consistent format
Simple description of PDU encoding
Code
Comment
0031000b81
Initial
3196918732f2
Destination
0008a7
Ext
76 Length
05
SMS merge protocol
identifier
Length of protocol
header
00
Split SMS logo
03
Length of data
element
23
Used to merge two
text messages
02 A total of two
01 This is the first

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4e1c98ce591c653e82b153436811ff0c66f454
39843dff0c661f598296e830025b9d9a6c96d5
8f6699996ee18def300251e47bab58f052a8ff0
c738958f651498f6cff0c4e00591c9c7c9f9982
1e300286fe513f96ea67f39ec491d17f15ff0c7
b118bed76c876c86697999953bb3002
Content
Mobile phone number: f encoding end number string pairs filled digital, 22 character change
position.
The above examples show the target mobile phone number 13691978232 sends content to
spend the night of Dongfeng, more trees, stars like rain. BMW carving. Fung sound, its full light,
night ichthyosaurs dance. Chongchong golden thread, laughter floats to.".
PDU length: does not contain the initial 00 and the final <0x1a>, and then divided by the number
of examples in the case of 132, the number of the.
User information coding length: in the example, the message merge protocol identifies a
length of 6 + Unicode with a length of 112 and a length equal to about 118, so it is written to be
76.
Simple description of PDU encoding
Code
Comment
0031000b81 Initial
3196918732f2 Destination
0008a7 Ext
36 Length
05
SMS merge protocol
identifier
Length of protocol
header
00 Split SMS logo
03
Length of data
element
23
Used to merge two
text messages
02 A total of two
02
This is the second
4f1791cc5bfb4ed65343767e5ea6ff0c84e6713
656de9996ff0c90a34eba53745728ff0c706f70
6b961173ca59043002
Content
Mobile phone number: F encoding end number string pairs filled digital, 22 character change
position.
The above examples show the target mobile phone number 13691978232 to send the
contents of "he found the degreeses, suddenly look back, that person but in the lights dim.".
PDU length: does not contain the initial 00 and the final <0x1a>, and then divided by the number
of examples in the case of 68, the number of the.
User information coding length: in the example, the message merge protocol identifies a

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length of 6 + Unicode with a length of 48 and a length equal to about 54, so it is written to be 36.
5.1.6. GSM/GPRS Receive SMS
at+cpms=mt,mt,mt<cr> // Preferred SMS message storage
OK
5.1.6.1. GSM/GPRS Receive SMS Indication
at+cnmi=2,1<cr> // New SMS message indications setting
OK
+CMTI : "MT",1 // New SMS message indications
at+cmgr=1<cr> // read SMS
+CMGR: 0, 23
544651984165416511515…
5.1.6.2. GSM/GPRS Receive SMS auto display
at+csms=1<cr> // Select Message Service
+CSMS: 1, 1, 1
OK
at+cnmi=2,2<cr> // New SMS message indications setting
OK
+CMT : "+86138*******", ,"04/06/26" // auto display the new SMS
HELLO
at+cnma<cr> // acknowledge an incoming message
OK
5.1.6.3. 4G LTE Receive SMS auto display
5.1.6.3.1. PDU Mode
at+cmgf=0<cr> //PDU Mode
+CMTI: "ME",0 // Prompt to receive a short message (stored i
n location: 0)
at+cmgr=0<cr> // Read location 0 SMS
+CMGR: 0,,40
0891683108705505F0040D91683127683948F5000881213061238023144F60597DFF0C6DF157335E0
25D07701A79D16280
OK // Return value
at+cmgd=0<cr> // Delete location 0 SMS
OK // Return value
PDU Coding analysis
Example：你好，深圳市崇瀚科技
0891683108705505F0040D91683127683948F5000881213061238023144F60597DFF0C6DF1573
35E025D07701A79D16280
Code Comment
0891683108705505F0 Number Center
04 AUTO
0D Phone number length
91683127683948F5 Phone number
00 AUTO
08
UNICODE
81213001850323
time: 18-12-03 10:58:32
14
SMS length

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4F60597DFF0C6DF157335E025D07701A79D1
6280 SMS：你好，深圳市崇瀚科技
5.1.6.3.2. ASCII Mode
at+cmgf=1<cr> //ASCII Mode
OK // Return value
+CMTI: "ME",0 // Prompt to receive a short message (stored i
n location: 0)
at+cmgr=0<cr> // Read location 0 SMS
+CMGR: "REC UNREAD","[phone]",,"18/12/03,17:04:45+32"
4F60597D // SMS：你好
OK // Return value
+CMTI: "ME",1 // Prompt to receive a short message (stored i
n location: 1)
at+cmgr=1<cr> // Read location 1 SMS
+CMGR: "REC READ","[phone]",,"18/12/03,17:02:28+32"
Hello //SMS：Hello
OK // Return value
at+cmgd=0<cr> // Delete location 0 SMS
OK // Return value
5.2. SMS Process
6. TTS voice broadcast function
This function is only suitable for CH-M3G7Z19 model.
6.1. Judgement operator
Judge the first five digits:
at+cimi<cr>
460036281409309
OK
China Mobile: 46000, 46002, 46007
China Unicom: 46001, 46006, 46009
China Telecom: 46003, 46005, 46011
China Tietong: 46020
China Telecom calls voice phone commands: AT + CDV13612345678;

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Other operators use orders: ATD13612345678;
6.2. UNICODE encoding mode
<data>: Broadcast content, currently supports 512 unicode/gbk characters (2048 encoding length,
ZTTS two GBK encoding and UNICODE encoding both support 2048 encoding length, corresponding
to 512 characters); UNICODE encoding format is before and after byte exchange position, such as
"欢" (6B22), after position replacement (226B).
at&f<cr> // Restore factory settings
OK // Return
ate0<cr> // Close back display
OK // Return
atd13612345678;<cr> // Dial Voice Telephone (Except Telecom)
OK // Return
RINGBACK // Ringing
CONNECT // Receiving state
at+ztts=a,"226bce8f7f4f2875ed8bf39708541062fb7cdf7e"<cr>
// In UNICODE encoding format, the text is:“欢
迎使用语音合成系统”
OK
+ZTTS: 0 // End of voice play
at+chup<cr> //Hang up locally
NO CARRIER //Remote hangup
6.3. GBK encoding mode
Note: The CDMA network uses "AT + CDV13612345678;" to make voice calls.
<data>: The broadcast content currently supports 512 unicode/gbk characters (2048 encoding
length, ZTTS GBK encoding and UNICODE encoding both support 2048 encoding length,
corresponding to 512 characters;).
at&f<cr> // Restore factory settings
OK // Return
ate0<cr> // Close back display
OK // Return
atd13612345678;<cr> // Dial Voice Telephone (Except Telecom)
OK // Return
RINGBACK // Ringing
CONNECT // Receiving state
at+ztts=b,"bbb6d3adcab9d3c3d3efd2f4bacfb3c9cfb5cdb3"<cr>
// In UNICODE encoding format, the text is:“欢
迎使用语音合成系统”
OK
+ZTTS: 0 // End of voice play
at+chup<cr> //Hang up locally
NO CARRIER //Remote hangup
7. CSD
7.1. Relate Command
7.1.1. Modem Initial Command
at&f<cr> // restore parameters
at+ipr=115200<cr> // setting fixed baud rate
7.1.2. Server Initial
ats=2<cr> // auto answer after 2 ring received.

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7.1.3. Client Dial A Data Call
atd<dn>;<cr> // data call without ";", and [dn] is the CSD
server number
7.1.4. Server Manual Answer
ata<cr> // manual answer
7.1.5. Communication Operate Command
+++ // terminal data transfer, back to the command
mode
ato<cr> // switch command mode to data transfer mode
7.1.6. Hang Up
ath<cr> // hang up the data channel
8. Reboot
at+cfun=1,1<cr> // reboot device
9. Three-view Drawing

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10. Product List
Name
Unit
QT Y.
Describe
Picture
Standard
CH-M3
(Serial type) Item 1 Device
Antenna Item 1 SMA
Option1
Power
Adapter Item 1 DC 12V1A
DB-9 Cable Item 1 DB9
Option2 USB Cable Item 1 TypeA-
MacroB