System information

General Reference Guide eWON Configuration
RG-001-0-EN ver 1.5 eWON® - 20/03/2009 - ©ACT'L sa Page 53
3.3.4.3.4 Callback
Warning: depending on your eWON's version (c.f. Table 187 on page 203)
This menu contains the configuration controls that the eWON will use to perform callback operations.
Figure 42: Callback configuration
Control Description
General Callback Config
Callback enabled
If this box is checked, then the eWON callback feature is enabled. This means that the eWON can be
triggered by an external event in order to call a given phone number in order to establish a PPP link.
This permits to let the eWON’s phone line pay for the call, with a budget maintained by the eWON
itself. This also ensures more security if you are calling back a private server. Do not forget to enable
outgoing calls in the dialup configuration.
Callback delay
Once the eWON has been triggered, it will wait for this amount of time before dialing out. This is useful
in order to release the phone line or perform any other action.
Wait for user login for
Once the eWON has been triggered, it will wait for this amount of time in order for the user to log-in.
Otherwise, the call is dropped. It is clear that this delay has to be greater than the sum of the callback
delay and the call establishment.
Dialup account
This list box permits to choose the server used for callback. The "User’s request account" option can
not be chosen when the trigger mode is "Ring", because the eWON does not know the server data at
this time.
Publish IP address
Enables/Disables the publication of the IP address once the eWON is connected to the Internet.
The publishing parameters are defined in the “Publis IP Address” menu (previous chapter).
Callback mode: ON RING
This is a mutual exclusive option with Callback on User’s request. Selecting this option disables the
User Callback mode. When the eWON sees an incoming call, it will trigger its callback task.
Number of RINGS
(minimum value is 2): This is the number of rings needed before the eWON callback function is
triggered. Assuming that a value of 3 has been entered, the eWON will generate a callback if
someone calls the eWON and lets the phone ring 5 times.
Plus number of RINGS
then On Hook
(minimum value is 5): This is the number of rings that are necessary to avoid the callback trigger.
Assuming that a value of 5 has been entered, if the user tries to call the eWON directly, this can be
achieved by ringing the phone more than the sum from the two values. With the current example, the
eWON will pick up the line after more than 3+5=8 rings are detected.
Callback mode : ON User’s
request
When this option is selected, the eWON accepts the incoming calls and then the user can request a
callback to a defined server.
When connecting to an eWON with Callback on user's request, you will get the following webpage.
You will start the callback by using the Callback button or abort (hang up the phone line) by using the
"Close PPP Connection" button.
The callback can be performed with the parameters specified in the user’s configuration page. The
delay the eWON will wait before initiating the callback can be specified.
Table 35: general callback configuration controls