Configure network interfaces Configure Advanced interfaces settings: External modems and PPP
Digi TransPort WR Routers User Guide 293
External Modems parameters
The External Modems page contains external modem parameters. External modem support added
to GPRS builds. It is now possible to have a GPRS build that can also make outgoing PPP
connections via an external modem. It is also possible to answer incoming calls via an external
modem.
The PPP use_modem field has been altered so the value indicates which modem type to use. Value
1 indicates use of the GPRS modem. Value 2 indicates use of the external modem. By including
enough modem call control instances, you can perform multilink PPP over multiple external
modems.
ASY Port
The physical ASY port for the external modem.
W-WAN mode
Enables W-WAN mode.
Initialisation string n
These parameters (Initialisation string 1, Initialisation string 2, Initialisation string 3) allow
you to specify a number of command strings that are sent to the wireless module each time a
wireless connection is attempted. You can use these parameters to set non-standard wireless
operating modes.
Each string is prefixed with the characters AT before being sent to the wireless module and they
are sent to the wireless module in the order specified until an empty string is encountered. For
example, Initialisation string 3 will not be sent unless Initialisation string 1 and Initialisation
string 2 are both specified. Initialization strings are not normally required for most applications
as the router will normally be pre-configured for correct operation with most networks.
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