A7600 Series_TCPIP_Applicati0n Note

A7600 Series_ TCPIP_Application Note LTE Module SIMCom Wireless Solutions Limited Building B, SIM Technology Building, No.633, Jinzhong Road Changning District, Shanghai P.R. China Tel: 86-21-31575100 support@simcom.com www.simcom.com

A7600 Series_TCPIP_Application Note_V1.00 A7600 Series_TCPIP_Application Note 1.00 2020.6.19 Released Document Title: Version: Date: Status: GENERAL NOTES SIMCOM OFFERS THIS INFORMATION AS A SERVICE TO ITS CUSTOMERS, TO SUPPORT APPLICATION AND ENGINEERING EFFORTS THAT USE THE PRODUCTS DESIGNED BY SIMCOM. THE INFORMATION PROVIDED IS BASED UPON REQUIREMENTS SPECIFICALLY PROVIDED TO SIMCOM BY THE CUSTOMERS. SIMCOM HAS NOT UNDERTAKEN ANY INDEPENDENT SEARCH FOR ADDITIONAL RELEVANT INFORMATION, INCLUDING ANY INFORMATION THAT MAY BE IN THE CUSTOMER’S POSSESSION. FURTHERMORE, SYSTEM VALIDATION OF THIS PRODUCT DESIGNED BY SIMCOM WITHIN A LARGER ELECTRONIC SYSTEM REMAINS THE RESPONSIBILITY OF THE CUSTOMER OR THE CUSTOMER’S SYSTEM INTEGRATOR. ALL SPECIFICATIONS SUPPLIED HEREIN ARE SUBJECT TO CHANGE. COPYRIGHT THIS DOCUMENT CONTAINS PROPRIETARY TECHNICAL INFORMATION WHICH IS THE PROPERTY OF SIMCOM WIRELESS SOLUTIONS LIMITED COPYING, TO OTHERS AND USING THIS DOCUMENT, ARE FORBIDDEN WITHOUT EXPRESS AUTHORITY BY SIMCOM. OFFENDERS ARE LIABLE TO THE PAYMENT OF INDEMNIFICATIONS. ALL RIGHTS RESERVED BY SIMCOM IN THE PROPRIETARY TECHNICAL INFORMATION ，INCLUDING BUT NOT LIMITED TO REGISTRATION GRANTING OF A PATENT , A UTILITY MODEL OR DESIGN. ALL SPECIFICATION SUPPLIED HEREIN ARE SUBJECT TO CHANGE WITHOUT NOTICE AT ANY TIME. SIMCom Wireless Solutions Limited Building B, SIM Technology Building, No.633 Jinzhong Road, Changning District, Shanghai P.R. China Tel: +86 21 31575100 Email: simcom@simcom.com For more information, please visit: https://www.simcom.com/download/list-863-en.html For technical support, or to report documentation errors, please visit: https://www.simcom.com/ask/ or email to: support@simcom.com Copyright © 2020 SIMCom Wireless Solutions Limited All Rights Reserved. www.simcom.com 1 / 24

A7600 Series_TCPIP_Application Note_V1.00 About Document Version History Revision Date V1.00 2020.6.19 Scope Chapter Songtao.Luo Description New version This document presents the AT Command Set for SIMCom A7600 Series, including A7600XX-XXXX, A5360E, and A7670X. www.simcom.com 2 / 24

A7600 Series_TCPIP_Application Note_V1.00 Contents About Document .................................................................................................................... 2 Version History ...................................................................................................................................... 2 Scope .................................................................................................................................................... 2 Contents ................................................................................................................................. 3 Introduction ...................................................................................................................... 4 1 1.1 Purpose of the document ............................................................................................................ 4 1.2 Related documents ..................................................................................................................... 4 1.3 Conventions and abbreviations ................................................................................................... 4 1.4 The process of Using TCPIP AT Commands .............................................................................. 5 1.5 Error Handling ............................................................................................................................. 8 Executing FTP(S) AT Commands Fails ............................................................................ 8 PDP Activation Fails ......................................................................................................... 8 Error Response of TCPIP Server ..................................................................................... 8 1.6 Description of Data Access Mode ............................................................................................... 8 2 AT Commands for TCPIP .............................................................................................. 10 TCPIP Services AT .................................................................................................................... 10 1.5.1 1.5.2 1.5.3 2.1 3.2 3.2.1 3.2.2 3.2.3 3.1.1 3.1.2 3.1.3 3.1.4 3 TCPIP Examples ............................................................................................................ 11 3.1 Configure and Activate context ................................................................................................. 11 Network Environment ..................................................................................................... 11 Configure Context .......................................................................................................... 11 Activate context .............................................................................................................. 11 Deactivate Context ......................................................................................................... 12 TCP Client ................................................................................................................................. 12 TCP Client Works in Direct Push Mode .......................................................................... 12 TCP Client Works in Buffer Access Mode ...................................................................... 13 TCP Client Works in Buffer Access Mode ...................................................................... 14 3.3 UDP Client ................................................................................................................................ 16 UDP Client Works in Direct Push Mode ......................................................................... 16 UDP Client Works in Buffer Access Mode ...................................................................... 17 UDP Client Works in Transparent Access Mode ............................................................ 18 TCP Server ............................................................................................................................... 19 Transparent Mode .......................................................................................................... 19 3.4.1 3.4.2 Non-Transparent Mode .................................................................................................. 20 3.4.3 Query Connection Status ............................................................................................... 21 4 Appendix ........................................................................................................................ 22 4.1 Summary of Error Codes .......................................................................................................... 22 4.2 Unsolicited Result Codes .......................................................................................................... 23 3.3.1 3.3.2 3.3.3 3.4 www.simcom.com 3 / 24

A7600 Series_TCPIP_Application Note_V1.00 1 Introduction 1.1 Purpose of the document Based on module AT command manual, this document will introduce TCPIP application process. Developers could understand and develop application quickly and efficiently based on this document. 1.2 Related documents [1] A7600 Series_AT Command Manual 1.3 Conventions and abbreviations In this document, the GSM engines are referred to as following term: ME (Mobile Equipment); MS (Mobile Station); TA (Terminal Adapter); DCE (Data Communication Equipment) or facsimile DCE (FAX modem, FAX board); In application, controlling device controls the GSM engine by sending AT Command via its serial interface. The controlling device at the other end of the serial line is referred to as following term: TE (Terminal Equipment); DTE (Data Terminal Equipment) or plainly "the application" which is running on an embedded system; Other Conventions: PDP(Packet Data Protocol); TCP(Terminal Control Protocol); UDP(User Datagram Protocol); www.simcom.com 4 / 24

A7600 Series_TCPIP_Application Note_V1.00 1.4 The process of Using TCPIP AT Commands Figure illustrates how to use TCP/IP AT commands: www.simcom.com 5 / 24