[comp.dcom.modems] Problem: Using password security on a T2500

dem@meaddata.com (David Myers) (01/23/91)

   I'm having a problem using password security (S46=3) on my T2500
(GF7.00-T2500SA).

   The modem's configured for dialing in and out on the same line, and
it works just fine.  However, when I turn on password security, I
never get through to getty when dialing in.  I get the "Enter
Password:" prompt from the modem, and if I enter an incorrect
password, it hangs up immediately, as expected.  But when I enter a
correct password, the connection just hangs, without even echoing the
Carriage Return I hit after typing the password.  The getty on the
computer isn't waking up (according to ps).

   The computer is a Sun 3/160 running 4.1.  Software DCD has been
disabled on the tty, and getty (and UUCP) are set to use RTS/CTS flow
control.  The modem configuration is as follows (all other registers
are at ECM default values):

    41=1	Hang up if no data exchanged for 6 minutes
    51=252	Automatically detect DTE speed (usually 19200)
    52=2	Hang up and reset when DTR dropped
    54=3	Pass BREAK through the modem
    55=3	Pass +++ through the modem
    58=2	Use RTS/CTS flow control
    64=1	Don't abort a call if DTE sends characters during dial
    66=1	Lock interface speed during V32 or slow connections
    92=1	Send PEP tones last during answer sequence
    111=30	Do UUCP spoofing when in PEP mode
    131=1	Raise DCD on carrier detect.
    Q9		No result codes for remote, or when answering
    E0		Do not echo commands (or getty goes nuts)

  Any hints and tips are appreciated.  I haven't spoken to Telebit
about the problem yet.  I actually have two T2500's, and they both
exhibit the same behavior.
--
David Myers                                             (513) 865-1343   
Mead Data Central          Friends don't           Interactive Systems
P.O. Box 933                let friends               dem@meaddata.com
Dayton, Ohio  45401           use DOS.          ...!uunet!meaddata!dem

jns@fernwood.mpk.ca.US (Jerry Sweet) (01/24/91)

I have a T1600, not a T2500, but I ran into a similar problem.  I called
up Telebit tech support (1-800-TELEBIT) and this is what they told me.
This information may or may not help you.

- First, figure out whether you're using "pass-through" security
	(you're not in this case apparently) or "call-back" security.

- There is a "set password" command (~U on a T1600).  This command
	sets a security password for administrative purposes ONLY--
	it's used when you try to CHANGE other passwords.  It is
	NOT the same password that you type when you call in.

- When you select pass-through security, the modem will accept ANY of the
	passwords entered for the callback numbers.  You don't necessarily
	have to have a callback number associated with the password, but
	you have to have at least one password in the "N" list.

	When you select call-back security, the password that you type
	determines which number is called back.  Each number in the "N"
	list should have a different password associated with it.  The
	password is separated from the number by enclosing the password
	in backslashes (e.g. \PASSWORD\).

- Do not have both modems set to use call-back security; change the
	calling modem to non-secure mode first.  Otherwise, you may
	get into a call-back loop.

I haven't tried this for myself yet, but this information should provide
at least a few hints.  Hope it helps...