Quectel EC25 User Manual

LTE Module Series
EC25&EC21 AT Commands Manual
EC25&EC21_AT_Commands_Manual 131 / 231
OK
9.9. AT+CMMS More Messages to Send
The command controls the continuity of the SMS relay protocol link. If the feature is enabled (and
supported by the currently used network) multiple messages can be sent faster as the link is kept open.
Parameter
AT+CMMS More Messages to Send
Test Command
AT+CMMS=?
Response
+CMMS: (list of supported <n>s)
OK
Read Command
AT+CMMS?
Response
+CMMS: <n>
OK
Write Command
AT+CMMS=<n>
Response
OK
ERROR
If there is any error related to ME functionality:
+CMS ERROR: <err>
Maximum Response Time
120s, determined by network.
Reference
3GPP TS 27.005
<n> 0 Feature disabled
1 Keep enabled until the time between the response of the latest message send command
(AT+CMGS, AT+CMSS, etc.) and the next send command exceeds 1-5 seconds (the
exact value is up to ME implementation), and then ME shall close the link and TA
switches <n> back to 0 automatically
2 Feature enabled (if the time between the response of the latest message send command
and the next send command exceeds 1-5 seconds (the exact value is up to ME
implementation), ME shall close the link but TA will not switch <n> back to 0
automatically)

Quectel EC25 Specifications

General

Category	LTE Module
LTE TDD	B38/B40/B41
WCDMA	B1/B5/B8
GSM	850/900/1800/1900 MHz
Data rates	LTE Cat 4: 150 Mbps DL/50 Mbps UL
GNSS	GPS/GLONASS/BeiDou/Galileo/QZSS
Operating Temperature	-40°C to +85°C
Form Factor	LCC
Storage Temperature	-45°C to +90°C
SIM Interface	1.8V/3.0V
Antenna Interface	Main, Diversity, GNSS
LTE FDD	B1/B3/B5/B7/B8/B20
Interfaces	USB 2.0, UART, PCM, GPIO
Operating Voltage	3.3V - 4.3V
Protocols	TCP/IP, UDP, FTP, HTTP, HTTPS
Certifications	CE, FCC, PTCRB, GCF, RCM, IC