OS2 World.Com Forum

Subject  :  "invalid fcs" - can anbody help me?
Author  :  Batchheizer
Date  :  23 Feb, 2004 on 12:20
System: P233, 98 MB, Warp4, FP15, seriall modem (the modem is not the probelm - it runs under my PC very well)
Problem: Internet is much slower than under Win98. SLIPPM has lot of this errors: "error [NETW] invalid fcs", Safefire "hdlc: invalid fcs". I thought, it may be a problem with the COM-Port and tried SIO (S2K v203) but nothing changed.
Can anybody help me?

Subject  :  Re:"invalid fcs" - can anbody help me?
Author  :  zoron
Date  :  24 Feb, 2004 on 03:36
I think fcs stands for Frame Control Sequence, this is just a check that the ppp packet is received correctly.

fcs problems are normally caused by a faulty connection.

Although I have heard about problems with some later versions of com.sys.

Are you using the same modem commands in windows and os/2?

You could try the injoy dialer www.fx.dk/dialer it performs better than the ibm doip dialer.

Maybe you could try turning off your firewall temporarily to see if it helps.


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