Product Info

LTE Standard Module Series
EC25 Series Hardware Design
EC25_Series_Hardware_Design 22 / 134
Scheme)
Downlink coding schemes: MCS 1-9
Uplink coding schemes: MCS 1-9
Max 296 kbps (DL)/Max 236.8 kbps (UL)
Internet Protocol Features
Support TCP/UDP/PPP/FTP/FTPS/HTTP/HTTPS/NTP/PING/QMI/NITZ/
SMTP/SSL/MQTT/FILE/CMUX/SMTPS/MMS/FILE protocols
Support PAP (Password Authentication Protocol) and CHAP (Challenge
Handshake Authentication Protocol) protocols which are usually used for
PPP connections
SMS
Text and PDU mode
Point-to-point MO and MT
SMS cell broadcast
SMS storage: ME by default
(U)SIM Interface
Support USIM/SIM card: 1.8 V, 3.0 V
Audio Features
Support one digital audio interface: PCM interface
GSM: HR/FR/EFR/AMR/AMR-WB
WCDMA: AMR/AMR-WB
LTE: AMR/AMR-WB
Support echo cancellation and noise suppression
PCM Interface
Used for audio function with external codec
Support 16-bit linear data format
Support long frame synchronization and short frame synchronization
Support master and slave modes, but must be the master in long frame
synchronization
USB Interface
Compliant with USB 2.0 specification (slave only); the data transfer rate can
reach up to 480 Mbps
Used for AT command communication, data transmission, GNSS NMEA
output, software debugging, firmware upgrade and voice over USB
Support USB serial drivers for: Windows 7/8/8.1/10, Linux 2.6–5.4, Android
4.x–9.x, etc.
UART Interfaces
Main UART:
Used for AT command communication and data transmission
Baud rates reach up to 921600 bps, 115200 bps by default
Support RTS and CTS hardware flow control
Debug UART:
Used for Linux console and log output
115200 bps baud rate
SD Card Interface
Support SD 3.0 protocol
SGMII Interface
Support 10 Mbps/100 Mbps/1000 Mbps Ethernet work mode
Support maximum 150 Mbps (DL)/50 Mbps (UL) for 4G network
Wireless Connectivity
Interfaces
Support a low-power SDIO 3.0 interface for WLAN and UART/PCM
interfaces for Bluetooth