eWON General Reference Guide - Esco Drives & Automation

General Reference GuideeWON Configuration3.3.4.3.4 CallbackWarning: 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 configurationControlDescriptionGeneral Callback ConfigCallback enabledCallback delayWait for user login forDialup accountPublish IP addressCallback mode: ON RINGNumber of RINGSPlus number of RINGSthen On HookCallback mode : ON User’srequestIf this box is checked, then the eWON callback feature is enabled. This means that the eWON can betriggered 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 eWONitself. This also ensures more security if you are calling back a private server. Do not forget to enableoutgoing calls in the dialup configuration.Once the eWON has been triggered, it will wait for this amount of time before dialing out. This is usefulin order to release the phone line or perform any other action.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 callbackdelay and the call establishment.This list box permits to choose the server used for callback. The "User’s request account" option cannot be chosen when the trigger mode is "Ring", because the eWON does not know the server data atthis time.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).This is a mutual exclusive option with Callback on User’s request. Selecting this option disables theUser Callback mode. When the eWON sees an incoming call, it will trigger its callback task.(minimum value is 2): This is the number of rings needed before the eWON callback function istriggered. Assuming that a value of 3 has been entered, the eWON will generate a callback ifsomeone calls the eWON and lets the phone ring 5 times.(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 beachieved by ringing the phone more than the sum from the two values. With the current example, theeWON will pick up the line after more than 3+5=8 rings are detected.When this option is selected, the eWON accepts the incoming calls and then the user can request acallback 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. Thedelay the eWON will wait before initiating the callback can be specified.Table 35: general callback configuration controlsRG-001-0-EN ver 1.5 eWON® - 20/03/2009 - ©ACT'L sa Page 53