InHand InDTU324, User Manual

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engineering personnel observe the device running status.
Multi-serial port
communication speed
Baud rate: 1200-115200 bps
RS 232/485 Supports RS 232/485 communication. Depends on the device model.
Software watchdog Prevents accidental crash.
Hierarchical user
authentication
Supports two user levels: administrator and common user.
Default administrator user name/password: adm/123456;
Common user name/password: guest/123456.
Real-time clock
Upon power-off, a built-in super capacitance powers the RTC to avoid the
loss of system time. The power must persist for more than two hours;
otherwise, the clock is restored to the system time. Only some models
support this function.
Factory settings
restoration Clears settings and writes default settings. This function is implemented by
configuration program.
Table 1-2-2 Network functions
Function Description
PPP Point-to-point dialing protocol.
CHAP Authentication mode.
PAP Authentication mode.
Automatic
authentication.
Uses PAP and CHAP in turn.
When a client requests to go online, DTU performs PAP authentication first. If
the authentication fails, DTU performs CHAP authentication. If the
authentication fails again, DTU performs PAP authentication. The preceding
procedures are repeated.
PPP echo
Maintains the connection between DTU and carrier network, preventing
forcible dormancy and detecting the stability of dialing connection.
ICMP detection Maintains the connection between DTU and peer host.
Application layer echo
Detects the connection with application server by monitoring the heartbeat at
application layer. Eg. TCP keep-alive or user-define packet.
Table 1-2-3 Advanced functions
Function Description
Upgrade Locally upgrade by serial port or remotely upgrade by IP network
Import/export Exports configuration to files or imports configure file to device.
Log storage
Stores key logs to the Flash memory, which can be read by using
configuration tool or serial port.
DM remote network Once enables the DM function, Through the DM platform, you can read and