Service Guide

LTE Standard Module Series
EG915U_Series_Hardware_Design 14 / 90
FTPS/SSL/FILE/MQTT/MMS protocols
⚫ Supports PAP and CHAP protocols, which are usually used for PPP
connection
SMS
⚫ Text and PDU modes
⚫ Point-to-point MO and MT
⚫ SMS cell broadcast
⚫ SMS storage: (U)SIM card and ME; ME by default
(U)SIM Interfaces
⚫ Supports USIM/SIM card: 1.8/3.0 V
USB Interface
⚫ Compliant with USB 2.0 specification (slave mode only), with
maximum transmission rate up to 480 Mbps
⚫ Used for AT command communication, data transmission, software
debugging, firmware upgrade
⚫ Supports USB serial drivers for Windows 7/8/8.1/10, Linux 2.6–5.14,
and Android 4.x–11.x
UART Interfaces
Main UART
⚫ Used for AT command communication and data transmission
⚫ Baud rates: up to 921600 bps; 115200 bps by default
⚫ Supports RTS and CTS hardware flow control
Debug UART
⚫ Used for log output
⚫ Baud rate: 921600 bps
⚫ Cannot be used as a general-purpose serial port
Auxiliary UART
SPI Interface
⚫ Supports one SPI interface (master mode only)
I2C Interface
⚫ Supports one I2C interface
PCM Interface
⚫ Supports one PCM interface (slave mode only)
Audio Features
⚫ Supports one analog audio input and one analog audio output
⚫ GSM: HR/FR/EFR/AMR/AMR-WB
⚫ Supports echo cancellation and noise suppression
ADC Interfaces
⚫ Supports two ADC Interfaces
Network Indication
⚫ NET_STATUS used to indicate the network connectivity status
AT Commands
⚫ Compliant with 3G PP TS 27.007, 27.005 and Quectel enhanced AT
commands
USB_BOOT Interface
⚫ Supports one download control interface
Antenna Interfaces
⚫ Main antenna interface (ANT_MAIN)
⚫ Bluetooth and Wi-Fi Scan antenna interface (ANT_BT/WIFI_SCAN)
⚫ 50 Ω impedance
Position Fixing
⚫ Supports Wi-Fi Scan