pjd@eagle.inesc.pt (Paulo Jorge Delgado) (02/02/91)
Hello news readers. I'm having a problem with a 3Com terminal server. It's a
CS/210 and I've installed a dial-out modem in one of it's ports. I need to
connect to a UNIX host which accepts connections at 1200 and 2400 bps. To
make getty switch between these two speeds I need to send a break character
to the remote host. Here's what I usually do:
% telnet
telnet> debbug #
Debug mode is on. # because dg/ux forms the IP character
telnet> map "" IP # improperly
telnet> open modem
Trying...
Connected to modem.
Escape sequence: ^]
# lots of garbage here because of incorret
# line speed (1200 bps)
# I use the escape sequence ^]
telnet> send BRK
Returned to remote host.
login:
Now the problem begins. I've managed to make the remote getty operate
at the correct speed, but the CS/210 hangs the port after receiving a telnet
break character. The terminal server receives my input, but it doesn't go
into the modem. To make it work again I do a "send AYT", but getty switches
back to 1200.
What am I doing wrong? Any sugestions are welcome. Thanks in advance.
The port parameters are:
DefaultParameters for PortId !8
...................Port Transmission and VTP Characteristics...................
AUToDisconnect = Disabled AUtoLogoff = OFF BUffersize = 82
DeVice = ( Host, Glass, DeFault ) PermanentVC = ""
.........................Port Physical Characteristics.........................
BAud = 2400 BSPad = None CRPad = None FFPad = None
LFPad = None TabPad = None DataBits = 8 DUplex = Full
LinePRotocol = ASynchronous PARIty = ( None ) StopBits = 1
UseDCDout = ( OnConnection, ToggleonDisc )
UseDTRin = AsDCD (by DCE)
.................Session Transmission and VTP Characteristics..................
BReakAction = IGnore DIsconnectAction = None
DataForward = None ECHOData = OFF
ECHOMask = ( AlphaNum, CR, Term, Punct ) NetAScii = UseLF
FlowControlFrom = ( CTS_RTS, Xon_Xoff ) FlowControlTo = ( CTS_RTS, Xon_Xoff )
IdleTimer = 1 LongBReakAction = IGnore XmitBinary = OFF
XOFF = ^S XON = ^Q
--
Paulo Jorge Delgado
INESC, Lisboa, Portugal
Email: pjd@eniac.inesc.pt