Knowledge Base


Power Power design for the module is very important, as the performance of the module largely depends on the power source. RF When the receiver and transmitter in cellular terminal is ON, it receives and transmits radio frequency signals. Serial Serial port is used for AT command communication, data transmission, GNSS NMEA sentences output, software, debugging, firmware upgrade and voice over USB. SIM Card In order to enhance the reliability and availability of the (U)SIM card in customers’ applications, please follow the criteria from our hardware design note in (U)SIM circuit design. Call In order to make or receive a call, the cellular terminal must be switched on in a service area with adequate cellular signal strength. PHB Read/write/search the phonebook entries from the current phonebook memory storage. TCP/UDP Our modules provide the following socket services: TCP client, UDP client, TCP server and UDP server. Audio PCM interface is used for audio function with external codec, supports echo cancellation and noise suppression. SMS The format of messages can be either PDU mode (entire TP data units used) or text mode (headers and body of the messages given as separate parameters). PPP / MMS / FLASH All subjects related to procedures for PPP setup and termination, modes for PPP connection, MMS application interface for sending messages including multimedia objects (image, audio, rich text, etc.), internal flash.
Topic Replies Views Activity
1 638 January 20, 2021
3 493 January 25, 2023
0 22 January 23, 2023
4 1149 January 18, 2023
1 454 October 14, 2021
0 105 January 9, 2023
3 90 December 13, 2022
3 79 December 8, 2022
7 89 November 18, 2022
13 4368 November 9, 2022
0 90 October 23, 2022
1 215 July 7, 2022
2 126 May 14, 2022
2 329 April 22, 2022
3 398 March 31, 2022
10 1054 March 1, 2022
2 637 February 17, 2022
7 1641 February 12, 2022
2 480 November 9, 2021
1 283 August 10, 2021
2 1682 July 6, 2021
1 429 June 23, 2021
2 791 June 17, 2021
3 761 June 17, 2021
1 465 May 14, 2021
2 1112 April 24, 2021
3 705 April 16, 2021
1 592 February 19, 2021
3 509 January 25, 2021
1 765 January 20, 2021