VEGA MoRoS GPRS 1.3 - Manual (Page 49)

MoRoS GPRS 1.3 Functions
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via PPP authentification or their phone numbers. In the radio button selection
(Figure 13, page 34, above, position 10), choose either "After successful PPP
authentification" or "After a call from one these numbers".
Save the settings, by clicking "OK" (Figure 13, Page 34, above, Position 9).