Bausch Datacom DinBox RTU M4 Reference Manual page 21

WAN
Configuration of the WAN port.
General
• SIM PIN
•
Additional AT
PPP
•
PPP Authentication type
•
APN
• APNUN
the
• APNPW
• MRU
• MTU
Pin code for the installed SIM card. If the SIM pin is disabled,
the entered SIM pin will not be sent.
AT commands that will be executed at startup. Only certain
AT-commands are allowed, others are discarded.
Choice between CHAP and PAP (Challenge or
Password Authentication Protocol). PAP&CHAP
accepts both CHAP and PAP connections. At this
moment only PAP&CHAP can be used.
Access Point Network name, depends on the service
provider, see SIM card documentation.
APN username, some carriers use a user name and
password for authentication, should be provided by
the carrier.
APN Password, see APNUN
Maximum Receive Unit size, max size of one packet
received, standard is 1500 which is the maximum of
an Ethernet packet payload.
Maximum Transmission Unit size, max size of a
packet sent, standard is 1492 which is the maximum
PPP packet size. Using a bigger size can cause
fragmentation and reassembly during transmission.