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

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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?

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