Service Guide

LTE Standard Module Series
EG915U_Series_Hardware_Design 13 / 81
⚫ FDD: Max 10 Mbps (DL)/5 Mbps (UL).
GSM Features
GPRS:
⚫ Supports GPRS multi-slot class 12
⚫ Coding scheme: CS-1/CS-2/CS-3/CS-4
⚫ Max 85.6 Kbps (DL)/85.6 Kbps (UL)
Internet Protocol Features
⚫ Supports TCP/UDP/PPP/NTP/NITZ/FTP/HTTP/PING/CMUX/HTTPS/
FTPS/SSL/FILE/MQTT/MMS protocols
⚫ Support PAP (Password Authentication Protocol) and CHAP
(Challenge Handshake Authentication Protocol) protocols which are
usually used for PPP connection
SMS
⚫ Text and PDU modes
⚫ Point-to-point MO and MT
⚫ SMS cell broadcast
⚫ SMS storage: Stored in (U)SIM card and ME, stored in ME by default
(U)SIM Interface
⚫ Supports USIM/SIM card: 1.8/3.0 V
UART Interfaces
Main UART
⚫ Used for AT command communication and data transmission
⚫ Baud rates reach up to 921600 bps; 115200 bps by default
⚫ Supports RTS and CTS hardware flow control
Debug UART
⚫ Used for the output of partial logs
⚫ Baud rate: 921600 bps
⚫ Only used for debug UART, cannot be used for universal UART
Auxiliary UART
SPI Interface
⚫ Supports one SPI Interface (master mode only)
I2C Interface
⚫ Supports one I2C Interface
PCM Interface
⚫ Supports one PCM Interface
Audio Features
⚫ Supports one analog audios input and one analog audios 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