SLIP connection -- MIDRANGE-L

If somebody can help me it will be great :

I have an SLIP line (Win98 PC to AS400) on a AS400/model 170/OS V4R5/last cum C1100450

few days ago the OS was in V4R3 and every was working very well.

Today when I want to start the line (STRTCPPTP) I get every time the following messages in Qsysopr (translated from French to English) :

    - Starting TCP/IP point-to-point session for profile SLIPANS.
    - TCP/IP point-to-point session for profile SLIPANS ended.
    - software problem recorded for QTOCPPSM

I tried to create a new (same) line directly in V4R5 but I got the same problem.

Here is the configuration of the line :

CRTLINASC LIND(my_line) RSRCNAME(my_rsc) ONLINE(*NO) +
         INTERFACE(*RS232V24) CNN(*SWTPP) VRYWAIT(*NOWAIT) +
         AUTOCALL(*NO) BITSCHAR(8) PARITY(*NONE) STOPBITS(1) +
         DUPLEX(*FULL) ECHO(*NONE) LINESPEED(19200) MODEM(*NORMAL) +
         MODEMRATE(*FULL) SWTCNN(*DIAL) AUTOANS(*NO) +
         AUTODIAL(*YES) DIALCMD(*OTHER) SETMDMASC('*NONE') +
         CALLNBR(*NONE) INACTTMR(*NOMAX) MAXBUFFER(1500) +
         THRESHOLD(*OFF) FLOWCNTL(*HARDWARE) IDLTMR(1) +
         DSRDRPTMR(6) AUTOANSTYP(*DTR) CTSTMR(25) RMTANSTMR(60) +
         CMNRCYLMT(2 5)

Here is the point to point *ANS profile :

Name . . . . : MY_PROFILE

Text . . . . :
TCP/IP information:
Protocol type . . . . . . . . . . . . . . . . . . . :   *SLIP
Local interface address . . . . . . . . . . . . . . :   1.1.1.1
Remote IP address . . . . . . . . . . . . . . . . . :   2.2.2.2
Maximum transmission unit . . . . . . . . . . . . . :   576
Allow proxy ARP . . . . . . . . . . . . . . . . . . :   N
Add default route . . . . . . . . . . . . . . . . . :   N
Physical line information:
Line description . . . . . . . . . . . . . . . . . :   MY_LINE
Line type . . . . . . . . . . . . . . . . . . . . . :   *ASYNC
Autocreate controller and device . . . . . . . . . :   Y
Modem information:
Use a modem . . . . . . . . . . . . . . . . . . . . :   Y
    Modem information name:
      MultiTech 28800 Multimodem

     Modem initialization string:
       AT&D2&C1X4V1Q0S7=70$BA0$SB19200&S1
     Modem reset string:
       AT&F
     Modem answer command:
       ATS0=2
Script source information:
   Use connection dialog script . . . . . . . . . . . :   Y
     Member . . . . . . . . . . . . . . . . . . . . . :   ANSWIN95
     File . . . . . . . . . . . . . . . . . . . . . . :   QATOCPPSCR
       Library . . . . . . . . . . . . . . . . . . . . :     QUSRSYS
     ASCII character set identifier . . . . . . . . . :   00819
Local system security:
   Allow IP datagram forwarding . . . . . . . . . . . :   N
   System access authorization list . . . . . . . . . :   AUTSLIP

Thank for your help,

___________________________________________________________________
Eric PANISSARD
Responsable du D�partement iSeries 400

INFORMATIQUE DE TAHITI
6, rue Leboucher - BP 1744 - 98713 PAPEETE
TAHITI - POLYNESIE FRANCAISE
Tel : (689) 54 40 40 Fax : (689) 43 37 90
E-mail : EPanissard@idt.pf
___________________________________________________________________