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From: stebbins@GUIDUK.dec.com (Gary Stebbins)
Newsgroups: comp.sys.dec.micro
Subject: Re: DEC DF112-AA modem; How does it work?
Message-ID: <711@shodha.dec.com>
Date: 13 Feb 90 23:16:12 GMT
Sender: news@shodha.dec.com
Organization: Digital Equipment Corporation
Lines: 59


In article <20325@netnews.upenn.edu>, chaim@eniac.seas.upenn.edu (Chaim  Dworkin) writes...

>Is there anyone familiar with this modem who can tell me what the buttons
>along the front do?  The buttons are labeled as follows:
>"LL  ST  RL  DL  HS  Data/Talk"

LL: Local Loopback
ST: Self Test
RL: Remote Loopback
DL: Digital Loopback
HS: High Speed

>Additionally, the LEDs are labeled:
>"SD RD CD TR MR OH HS TM"

SD: Send Data
RD: Receive Data
CD: Carrier Detect
TR: Terminal Ready
MR: Modem Ready
OH: Off Hook
HS: High Speed
TM: Test Mode

>I also discovered that ctrl-C toggles from Talk to Data.  Can anyone tell
>me if there are any other keyboard commands the modem accepts?

The DF112-AA is not an autodial modem, and as far as I know should not
interpret any keyboard commands.  However, the box is the same as for the
DF112-AC, so possibly you have an -AC card in the box.  If that's the
case:

^A 	Activates the auto dial feature in burst mode.  Typically used
with computer configurations or intelligent terminals with memory
storage.

^B	Activates the auto dial feature in interactive mode.  (The modem
should respond with "Ready".)

^C	In manual answer mode, pressing Control C connects the modem to
the line without having to access the modem to change from talk to data.

P or T	Indicates pulse or tone dialing of digits that follow.  P is
assumed if not specified.

=	Access pause;  causes a pause period of 15 seconds to wait for
secondary dial tone.  If dial tone is not detected, "No Dial Tone" error
message is displayed.

#	Indicates the end of the number string; start dialing.


Example:

^B
	modem responds with "Ready"
T9=5556789#
	modem dials number and connects