Re: Netcom NetCruiser problem resolved (it's not good news)

John Carey (
Fri, 23 Jun 1995 12:45:02


I think that you are mistaken. The issue of SLIP vs. PPP really isn't
germane. Full implementations of either SLIP or PPP should support both
TCP/IP as well as UDP. Netcruser isn't a full implementation in that its
version of C-SLIP only supports TCP/IP, not UDP which is what CU-SeeMe uses.
The same problem would exist with such a partial implementation of PPP as well.

Before I got my ISDN line, I used to use CU-SeeMe with my Netcom SLIP account
regularly. (NOTE: I wasn't using Netcruser! I had a TCP/IP stack on my
machine and I had a real SLIP account with Netcom.)

The point is that CU-SeeMe doesn't know if you are using SLIP, PPP or some
other low level transport system. All CU-SeeMe needs is standard Internet
Protocol (IP) with support for UDP.

>Following discussions with Netcom, we have resolved our CuSeeMe problem
>with NetCruiser. The simple problem is that Netcruiser is not providing
>the all VERY important PPP (point-to-point) protocol. Netcruiser
>accounts are C-SLIP (compressed Serial Line Internet Protocol) and do
>not provide the PPP required by CuSeeMe.

>This was verified when I used my Compuserve dialer to attach to
>internet and was successful in running CuSeeMe. The Compuserve dialer
>does provide a PPP.

No it wasn't. All you verified was that Compu$serve supports UDP and
Netcruser does not.

I hope that this helps clarify things a little. There seems to be a lot of
confusion about these issues and I notice a lot of well intentioned but
essentially incorrect information being offered here.

I wouldn't like to discourage anyone from attempting to help anyone else, but
please be sure that you understand what you are saying before you present it
as fact here.

Alex, I appreciate your efforts to get some answers and I applaud your spirit
in wanting to help the rest of the community by making them available. I
don't mean this message to be taken as a criticism, but simply a correction.

John (