# Looking for help in using command line xmodem to work with a Portserver TS

**URL:** <https://forums.digi.com/t/looking-for-help-in-using-command-line-xmodem-to-work-with-a-portserver-ts/7091>\
**Category:** Realport\
**Created:** [May 31, 2008, 1:45am UTC](https://forums.digi.com/t/looking-for-help-in-using-command-line-xmodem-to-work-with-a-portserver-ts/7091 "2008-05-31T01:45:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dgalekov](https://avatars.discourse-cdn.com/v4/letter/d/ecd19e/32.png) [@dgalekov](https://forums.digi.com/u/dgalekov)\
**Post date:** [May 31, 2008, 1:45am UTC](https://forums.digi.com/t/looking-for-help-in-using-command-line-xmodem-to-work-with-a-portserver-ts/7091/1 "2008-05-31T01:45:28Z")

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Using windows this always works … configure Procmm+ so use a tcp/ip connection … an IP and a port address and (xyz)modem works through the app (Procomm+) … but in Linux (Fedora Core 6) command line (xyz)modem doesn’t work… from tcpdump sz doesn’t handshake with xmodem device that is waiting say off port 1 … any ideas??

Thanks in advance

Dale G

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**Author:** ![userid0](https://avatars.discourse-cdn.com/v4/letter/u/f6c823/32.png) [@userid0](https://forums.digi.com/u/userid0)\
**Post date:** [June 3, 2008, 2:33pm UTC](https://forums.digi.com/t/looking-for-help-in-using-command-line-xmodem-to-work-with-a-portserver-ts/7091/2 "2008-06-03T14:33:15Z")

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Sounds like flow control. What flow control settings have been applied to the ports (xon/xoff or rts/cts)? What flow control settings is xmodem configured to use in Fedora?

Here are some settings we have on-hand that have been reported to work with xmodem:

modem port (modem on port 1):

set line range=1 parity=N csize=8 error=ignore  
set line range=1 baud=9600  
set flow range=1 ixon=off ixoff=off rts=on cts=on  
set port range=1 dev=min sess=4 termtype=“vt100” edelay=1 auto=off bin=off set port range=1 uid=none group=none dport=none dest=none

User configuration (for uploading):

set user name=“username” autohost=(IP\_ADDRESS)menu=off set user name=“username” defaultaccess=autoconnect autoport=(SOCKET-PORT\_#)  
set user name=“username” commandline=on autoconnect=on netservice=off  
set user name=“username” outgoing=on autoservice=raw