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How do I get ISDN on server to accept incoming calls from remote users with 56k modems?

How do you set up a ISDN modem on a server to accept incoming calls from remote users using laptops with 56k modems? I have been able to set up the ISDN to dial out and connect to other servers using VPN, but not for remote users to dial in to this server.

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It is not possible for an ISDN modem to accept incoming calls from POTS (plain old telephone service) modems. You must have a POTS modem bank on your remote access server to accept incoming POTS calls.

This was first published in January 2002

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