SAMUEL
2019-9-20
CHONGHAN CH-M3 WIRELESS MODEM USER MANUAL
页5
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
