I have an AS 5200 with a PRI configured for Incoming Multilink Async and ISDN Calls. I've used the same configuration according to this link below.
http://cisco.com/en/US/customer/tech/tk801/tk379/technologies_configuration_example09186a0080094557.shtml
Users are able to dial in using Analog lines. But when remote user's using an ISDN Line dials in, the user's computer begins to register on the network and the following error shows up on his computer.
"Checking network protocol connections... TCP/IP CP reported error 733. Your computer and the remote computer could not agree on PPP control protocols."
Is there anything I'm missing.