User's Manual

15
4.3 GPRS Dialing
Table 4-3 Setting GPRS dialing parameters
Parameters
Description
Default
Auto dial
Enable or disable auto dial.
Yes
PPP echo interval
30 to 3600 seconds.
50
Redial interval
0 to 3600 seconds.
60
Max redial times
Once consecutive failed redial times reach to the
predefined limit (1-10), the device will automatically
hot restart.
3
Dual SIM mode
Enable this function before use SIM No.2.
This parameter is invalid for single-card version of DTU
Close
Switchover card when
fail to connect center
This parameter is invalid for single-card version of DTU
Close
SIM card
The associate parameters about each SIM
GPRS dial number
The dial number to access the special cellular network
*99***1#
APN
Access Point Name
cmnet
APN user name
Account for login the APN
gprs
APN password
Password for login the APN
gprs
Authentication mode
Auto/PAP/CHAP
Auto
Network mode
Auto/4G/3G/2G
Auto
Local APN settings
Default setting about SIM, suitable for LTE 4G.
4.4 Application Center
Table 4-4 Setting application center parameters
Parameters
Description
Default
DTU ID
Custom device identification number. It supports 11
digits number.
0001
Application center
The IP address, port number, and domain name of
the center.
If the IP and domain name are configured, configure
one only.
0.0.0.0/
empty/0
Application center
link mode
TCP, UDP, DCTCP, DCUDP, or Modbus bridge
The custom heartbeat frame for link maintenance is
recommnad when using UDP.
TCP
Max retransmit times
0 (TCP automatically retransmits data times)
5
Forced DC heartbeat
This function will take effect only for DC protorol.
“OFF” means that heartbeat will sleep when
transmitting data;
“ON” means that heartbeat always work even
transmitting data;
OFF