LTE Standard Module Series
EC25 Mini PCIe Hardware Design
EC25_Mini_PCIe_Hardware_Design 16 / 79
Max 296Kbps (DL)/Max 236.8Kbps (UL)
Internet Protocol Features
Support TCP/UDP/PPP/FTP/FTPS/HTTP/HTTPS/NTP/PING/QMI/NITZ/
SMTP/SSL/MQTT/CMUX/SMTPS/MMS/FILE protocols
Support protocols PAP (Password Authentication Protocol) and CHAP
(Challenge Handshake Authentication Protocol) which are usually used for
PPP connection
SMS
Text and PDU modes
Point-to-point MO and MT
SMS cell broadcast
SMS storage: ME by default
(U)SIM Interface
Support USIM/SIM card: 1.8V, 3.0V
UART Interfaces
Main UART:
Support RTS and CTS hardware flow control
Baud rate can reach up to 230400bps, 115200bps by default
Used for AT command communication and data transmission
COEX UART*:
LTE/WLAN&BT coexistence UART
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
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 480Mbps
Used for AT command communication, data transmission, firmware
upgrade, software debugging, GNSS NMEA output and voice over USB.
Support USB serial drivers for: Windows 7/8/8.1/10, Linux 2.6~5.4, Android
4.x/5.x/6.x/7.x/8.x/9.x, etc.
Antenna Connectors
Include main antenna, diversity antenna and GNSS antenna receptacle
connectors
Rx-diversity (Optional)
Support LTE/WCDMA Rx-diversity
GNSS Features
Gen8C Lite of Qualcomm
Protocol: NMEA 0183
Data update rate: 1Hz by default
AT Commands
Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT
commands