Carrier Detect Over a VMS LAT Protocol

Carrier Detect Over a VMS LAT Protocol

Post by Harveys M » Tue, 21 Dec 1999 04:00:00



Hi there,

I am using an Alpha server running OpenVMS 6.2

I have setup a LAT port that is talking to the modem O.K. and is talking to
the outside world O.K.

I can't do a set term/perm/modem to enable modem controls in VMS 6.2

My problem is I need to do a
WAIT 1 \CD
to check for carrier detect in my .INI file
this just falls over immediately

PLEASE HELP

HOW CAN I CHECK FOR CARRIER DETECT USING A LAT DEVICE

Many Thanks

Brian Ward
Production Systems Manager
Harveys Furnishing plc

Phone    : (+44) 1708-521177
Fax        : (+44) 1708-520985

 
 
 

Carrier Detect Over a VMS LAT Protocol

Post by Frank da Cr » Tue, 21 Dec 1999 04:00:00




: I am using an Alpha server running OpenVMS 6.2
:
: I have setup a LAT port that is talking to the modem O.K. and is talking to
: the outside world O.K.
:
: I can't do a set term/perm/modem to enable modem controls in VMS 6.2
:
: My problem is I need to do a
: WAIT 1 \CD
: to check for carrier detect in my .INI file
: this just falls over immediately
:
: PLEASE HELP
:
: HOW CAN I CHECK FOR CARRIER DETECT USING A LAT DEVICE
:
So this is a question about C-Kermit?  Which version?  The current version
is 6.0:

  http://www.columbia.edu/kermit/ck60.html

soon to be replaced by 7.0:

  http://www.columbia.edu/kermit/ck70.html

Anyway, I'm not sure if this works.  The best way to tell is to give
commands like like this:

  set line ltannn  (replace with actual port name)
  show comm
  show modem

Does it show modem signals, or does it say "Modem signals not available"?

If it shows modem signals then you can use WAIT to test for them, but
you have to omit the backslash -- just use "wait 1 cd".

If it says "Modem signals not available", that means it asked VMS for
the modem signals and VMS returned an error.

But are you really asking the right question?  What are you trying to
accomplish with "wait 1 cd"?  Is this part of a dialing sequence?  If so,
did you know that you can just use the DIAL command?  All of this is
explained in the manual:

  http://www.columbia.edu/kermit/ck60manual.html

- Frank

 
 
 

1. NO CARRIER with kermit on Alpha DS10 with VMS 7.3

A kermit script worked fine on an alpha 2000, vms 7.2-1 and
kermit (probably 6.0.192), at&t dataport 14.4 modem.

After moving to a DS10 with vms 7.3, same modem, the script
hung with the dial command and timed out.

We installed ckermit 8.0.206 and still had the problem.
Doing a connect and issuing AT dial commands also failed
with a NO CARRIER message. We tried setting 'set carrier-watch off'
and 'set modem carrier-watch off' (are they the same?)
and still got the same problem.

Did something change in the DS10 cabling requirements or
does VMS 7.3 have different setups for modme dialout?
How can i fix this?

thank you
sol gongola
adl data systems inc
dobbs ferry, ny 10522

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