VEGA INSYS Modem GPRS 5.0 - Manual (Page 22)

Mounting INSYS GPRS 5.0 serial
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4.5.7 Set GPRS APN (Access Point Name) dial-in parameters
1. Click on the tab "TCP transparent" in the program HSComm GPRS.
see also Chapter 11 - GPRS Dial-in Parameters -
2. Enter the GPRS Access Point Name in the software HSComm GPRS.
Your mobile network provider will inform you about the name
of your APN. Please find an overview of the APNs of some mobile
network providers in the attachment to this manual.
For some network providers, PAP authentication is required. See
also Chapter 10: Dial-in parameter.