OnCell G3470A-LTE
Web Console Configuration
3-8
Field
Description
Default setting
SIM 1/2
Authentication Type
Select
Auto
if you want the OnCell device to automatically select
either PAP or CHAP authentication method when setting up a data
session.
Select
PAP
(Password Authentication Protocol) to send user name
and password to the server and verify that the user name and
password match with the server database.
Select
CHAP
(Challenge-Handshake Authentication Protocol) if the
identifiers are changed frequently and if authentication can be
requested by the server at any time. CHAP provides more security
than PAP.
Note:
This technique is vulnerable to eavesdroppers who may try
to obtain the password by listening in on the serial line, and to
repeated trial and error attacks. If you select
CHAP
(Challenge
Handshake Authentication Protocol), the authenticator (i.e., the
server) sends a randomly generated “challenge”' string to the
OnCell device along with its host name. The OnCell device uses
the host name to look up the appropriate secret, combines it with
the challenge, and encrypts the string using a one-way hashing
function.
Auto
GuaranLink
A number of factors can contribute to connection failures for cellular communications, including loss of
cellular signal, interference, and termination by the operator for unknown reasons. Moxa’s proprietary
GuaranLink feature, which is different from the basic heartbeat function, enables reliable connectivity with
4-tier intelligent connection checks without sending excessive and costly cellular packets.
GuaranLink Recovery Process for Dual SIM Connections
The GuaranLink feature in OnCell G3470A-LTE automatically tries to re-establish a connection when a
connection failure occurs by performing one of the following actions depending on the number of SIM cards
enabled in the device:
•
One SIM card: Resets the cellular module without rebooting the device to force negotiation between the
OnCell G3470A-LTE and the base station.
•
Dual SIM cards: Resets the cellular module without rebooting the device and establishes a cellular
connection using the second SIM card account.
