DUN (dial-up networking) - how to delay start of PPP LCP handshake after dial-up connection complete

Gordon Finlay 21 Reputation points

I want to configure a Windows 10 DUN (dial-up networking) connection so that after I dial out to a 3G HSPA cellular modem using "ATD*99#" to establish a PPP packet-radio connection, the DUN service will wait for a certain delay period (typically anywhere from 500ms to 1 second) after dialing before initiating the LCP handshake to negotiate a PPP session.

I know how to do this on Linux with the pppd utility by using the "connect-delay nnn" parameter in a peer script / chat script (where nnn is the delay in milliseconds before LCP handshake is started once a connection is established by dialing). But what I need to know is how to configure a PPP connect delay for Windows 10. I'm not sure if this is possible in a RAS script or by using a modem .inf file setting to specify the connect delay time.

I should mention that the delay is needed to prevent a dropped LCP Configure-Request (ConfReq) packet from causing a timeout if the LCP handshake is started too soon.

Anyone have any suggestions on how to do this?

Windows 10 Network
Windows 10 Network
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Network: A group of devices that communicate either wirelessly or via a physical connection.
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  1. Sunny Qi 10,906 Reputation points Microsoft Vendor


    Thanks for posting in Q&A platform.

    Unfortunately, I didn't find any Microsoft official document talking about how to prevent a dropped LCP Configure-Request packet.

    It seems that script may achieve your goal. Please kindly note that our forum doesn't focus on script issue, regarding script issue, I would suggest you could post in the following forum for further help:


    The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thank you for your understanding.

    Best Regards,


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