<<< EISNER::DUA0:[NOTES$LIBRARY]HARDWARE_HELP.NOTE;1 >>>
                               -< HARDWARE_HELP >-
================================================================================
Note 334.10      Microcom / Ven-Tel / (Hayes) dial-out problems         10 of 11
EISNER::LEDERMAN "Bart Z. Lederman"                  34 lines   4-APR-1989 11:01
                                 -< Working! >-
--------------------------------------------------------------------------------

    I have them working dial-in/dial-out.  The problem turned out to
    be modem control signals (no surprise) which I found when I finally
    got a break-out box.
    
    The important settings were:
    
    ATS0=2	(to allow dial-in as well as dial-out)
    AT\J0	(so the VAX is always 2400 baud regardless of line speed)
    AT\Q1	(flow control on the serial line, may not be vital)
    AT&D0	(ignore DTR, so the modem will respond when you send
    		 commands to it even if the VAX thinks the modem is
    		 off-line)
    AT&C1	(Carrier detect follows the remote system.  Otherwise,
    		 the VAX thinks the modem is always connected to something
    		 even if it isn't.)
    AT\D2	(DSR and RTS follow CD: this one is important.  If it's
    		 set to AT\D1 the modem will raise one of the signals
    		 when you give it a dial command, and in 30 seconds
    		 the VAX will hang you up unless the other signals have
    		 come up.  With AT\D2, none of the modem control signals
    		 come up until CD (carrier) come up).
    
    The last three did the trick.  Now I can dial out (manually or with
    VAXNET) and dial in.  The modems always run at 2400 baud between
    the modem and the VAX and auto-speed to the remote system.
    
    Switches:
                      1
    1 2 3 4 5 6 7 8 9 0
    D D D U U U U D U U front
    U D D U U U U D     rear
    
    It's only been up a few hours, but I'm fairly certain this has done
    it.  Other settings are factory default.