[comp.dcom.modems] modem detecting busy signal.

TNETE1NN@CLVM.BITNET.UUCP (04/29/87)

I have a Capetronic 1200 modem.  It is said to be fully Hayes
compatible and I haven't had any trouble with it until now.
If I call a number and it rings, it says "CONNECT ..... RING RESPONSE".
However, if there is a busy signal, 90% of the time it says the same thing.
Only once in a blue moon, after trying it repeatedly, will it
finally disconnect (after about 3 busy signals) and wait 30 sec.'s and
try again.  This is what it is supposed to do.  Can anyone understand
this?  Maybe it's defective - but this is the ONLY thing that's a problem.
Thanx,
Mike Rickenbach
TNETE1NN@CLVM

pete@wlbr.UUCP (04/30/87)

In article <8704291527.AA14475@ucbvax.Berkeley.EDU> TNETE1NN@CLVM.BITNET writes:
>I have a Capetronic 1200 modem.  It is said to be fully Hayes
>compatible and I haven't had any trouble with it until now.
>If I call a number and it rings, it says "CONNECT ..... RING RESPONSE".

Perhaps you have never been exposed to an actual HAYES 1200 - its
'CONNECT' responses are limited to either 'CONNECT' and 'CONNECT
1200'. Additionally, there is no capacity for busy signal detect. 'Busy'
or 'no answer' are the same here, i.e. 'NO CARRIER'.




-- 
                                                   Pete Lyall

Usenet:     {trwrb, scgvaxd, ihnp4, voder, vortex}!wlbr!pete
Compuserve: 76703,4230 (OS9 SIG Sysop)
OS9 (home): (805)-985-0632 (24hr./1200 baud)
Phone:      (818)-706-5693 (work 9-5 PST)

EATON Corp, IMSD, 31717 La Tienda Dr., Westlake Village, Ca. 91359
----------------------------------------------------------------------

dmkdmk@ecsvax.UUCP (04/30/87)

In article <8704291527.AA14475@ucbvax.Berkeley.EDU>, TNETE1NN@CLVM.BITNET writes:
> I have a Capetronic 1200 modem.  It is said to be fully Hayes
> compatible and I haven't had any trouble with it until now.
> If I call a number and it rings, it says "CONNECT ..... RING RESPONSE".
> However, if there is a busy signal, 90% of the time it says the same thing.
> Only once in a blue moon, after trying it repeatedly, will it
> finally disconnect (after about 3 busy signals) and wait 30 sec.'s and
> try again.  This is what it is supposed to do.  Can anyone understand
> this?  Maybe it's defective - but this is the ONLY thing that's a problem.
> Thanx,
> Mike Rickenbach
> TNETE1NN@CLVM

I have had similar problems with my Hayes compatible modem, and also
know of some folks that have the same happen with a genuine Hayes.  It
appears from what I personally observed, that it depends on the 
connection that the local phone cos. provide.  I have been using mine
for the past few months in Greensboro, NC which is serviced by Southern
Bell.  A call to any number is usually very quick and quiet, i.e.: no
clicking noises in the background.  When the actual connection takes 
place, you don't "hear" the CLICK either.  When I reach a number that
is busy in this case, it will give me the "REDIAL... WAITING 30 SEC"
message.  On the other hand, I have also used my modem at my New Jersey
residence in an area served by United Telephone.  I believe that we are
one of the few exchanges (possibly in the whole world! :-) that still
is on the old mechanical switching devices.  Anyways, when I dial a
number there, I hear lots of clicking and finally one loud click when
the connection is complete.  At this point, I get a "RING RESPONSE"
message, *before* the other end even rings or sends a busy signal!
Occassionally, even when I call from my NC residence to a long-distance
number, the same happens - but this is more of an exception rather than
the rule here.  But *ALWAYS* from NJ this is the case.  I'm not by 
telecommunications technologies expert, but have noticed this is often
the situation where this happens.  Another thing I do know is that upon
connection, the Tel Co's central office sends reverse battery, that may
be another cause.  Perhaps someone out there in net-land could shed
some light on the techincal aspects of this, I for one would like to
know more about it.  Hope this is of some help.
---
David M. Kurtiak
UNC - Greensboro
UUCP: {decvax,seismo}!mcnc!ecsvax!dmkdmk  -or-
      {ihnp4}!allegra!ulysses!ecsvax!dmkdmk
BITNET: DMKDMK@ECSVAX

duke@gitpyr.UUCP (05/01/87)

In article <1021@wlbr.UUCP>, pete@wlbr.UUCP (Pete Lyall) writes:
> 'CONNECT' responses are limited to either 'CONNECT' and 'CONNECT
> 1200'. Additionally, there is no capacity for busy signal detect. 'Busy'
> or 'no answer' are the same here, i.e. 'NO CARRIER'.
> 

I own a Hayes 1200, and it is fully capable of detecting a busy signal.
It supports X1 through X4.  Just thought I'd set the record straight. 

jeff@necntc.NEC.COM (Jeff Janock) (05/01/87)

In article <3515@gitpyr.gatech.EDU> duke@gitpyr.gatech.EDU (Roy Brabson) writes:
>In article <1021@wlbr.UUCP>, pete@wlbr.UUCP (Pete Lyall) writes:
>> 'CONNECT' responses are limited to either 'CONNECT' and 'CONNECT
>> 1200'. Additionally, there is no capacity for busy signal detect. 'Busy'
>> or 'no answer' are the same here, i.e. 'NO CARRIER'.
>I own a Hayes 1200, and it is fully capable of detecting a busy signal.
>It supports X1 through X4.  Just thought I'd set the record straight. 

Having owned a HAYES 1200 for some time and utilizing many HAYES 1200
and HAYES (1200/2400bps) compatable modems, I have not seen a way to 
detect a BUSY vs and NO ANSWER -

Have I been missing something?  If you would be so kind as to enlighten
those of us who are under the initaial impression that it is not there;
I am sure there are others as well who would like to know.

-- 
Jeff Janock - NEC Electronics +1 617 655 8833 jeff@necntc.NEC.COM
{ames, decvax, harvard, linus, mit-eddie}!necntc!jeff

was@hplsdlw.HP.COM (William A. Stubblebine) (05/03/87)

pete@wlbr.UUCP (Pete Lyall) writes:

> Perhaps you have never been exposed to an actual HAYES 1200 - its
> 'CONNECT' responses are limited to either 'CONNECT' and 'CONNECT
> 1200'.  Additionally, there is no capacity for busy signal detect.
> 'Busy' or 'no answer' are the same here, i.e.  'NO CARRIER'.

An actual Hayes 1200 has 4 call progress options.  Try typing
ATX4DT<number><cr> where the line at <number> is busy (your own modem's
phone number will do nicely).

                                Bill Stubblebine
                                Hewlett-Packard Logic Systems Div.
                                ...!ihnp4!hpfcla!hp-lsd!was
                                (303) 590-5568

haddock@ti-csl.CSNET (Rusty Haddock) (05/04/87)

In article <3515@gitpyr.gatech.EDU> duke@gitpyr.gatech.EDU (Roy Brabson) writes:
>In article <1021@wlbr.UUCP>, pete@wlbr.UUCP (Pete Lyall) writes:
>> 'CONNECT' responses are limited to either 'CONNECT' and 'CONNECT
>> 1200'. Additionally, there is no capacity for busy signal detect. 'Busy'
>> or 'no answer' are the same here, i.e. 'NO CARRIER'.
>> 
>
>I own a Hayes 1200, and it is fully capable of detecting a busy signal.
>It supports X1 through X4.  Just thought I'd set the record straight. 


That's funny 'cause I'm looking at the orange owner's manual this
very moment and the ATXn is valid for n=[0,1].   Now! Maybe, just maybe
what Roy states is possible on the "newer" Hayes 1200's but it ain't in
my manual.   The orange manual I have comes from a real Hayes 1200 bought
back when they cost a mere $599 - yep, not too long after the buggers
came out.  Now, all this yammering is assuming we're talking about the
external variety.   This is what we're talking about, right?

				-Rusty-

================================================================
Rusty Haddock +++ Texas Instruments, Inc. +++ Dallas, Texas
Computer Science Center, CRD&E +++ CSNET: Haddock@TI-CSL
USENET: {ut-sally!im4u,convex!smu,sun!texsun}!ti-csl!haddock

billw@wolf.UUCP (Bill Wisner) (05/06/87)

<3766@necntc.NEC.COM>: jeff@necntc.NEC.COM (Jeff Janock) writes:
>In <3515@gitpyr.gatech.EDU> duke@gitpyr.gatech.EDU (Roy Brabson) writes:
>>In article <1021@wlbr.UUCP>, pete@wlbr.UUCP (Pete Lyall) writes:
>>> 'CONNECT' responses are limited to either 'CONNECT' and 'CONNECT
>>> 1200'. Additionally, there is no capacity for busy signal detect. 'Busy'
>>> or 'no answer' are the same here, i.e. 'NO CARRIER'.

>>I own a Hayes 1200, and it is fully capable of detecting a busy signal.
>>It supports X1 through X4.  Just thought I'd set the record straight. 

> Having owned a HAYES 1200 for some time and utilizing many HAYES 1200
> and HAYES (1200/2400bps) compatable modems, I have not seen a way to 
> detect a BUSY vs and NO ANSWER -

I don't know about the Hayes 1200, but there are modems, such as the
Volksmodem 12 and the ADC "Phone Modem" (what a name!) that will print the
message BUSY rather than NO CARRIER. (Actually, the ADC prints things like
"CONNECTION ESTABLISHED" and "BUSY SIGNAL" and "RING RESPONSE." Yes, it has
ring detection.) And the Novation Apple Cat does even better. Given the right
software on the Apple II, it can detect almost any kind of tone. Generate
about any kind of tone, too.
-- 
Bill Wisner
..{sdcsvax,ihnp4}!jack!wolf!billw

myers@andromeda.RUTGERS.EDU (Scott R Myers) (05/10/87)

>That's funny 'cause I'm looking at the orange owner's manual this
>very moment and the ATXn is valid for n=[0,1].   Now! Maybe, just maybe
>what Roy states is possible on the "newer" Hayes 1200's but it ain't in
>my manual.   The orange manual I have comes from a real Hayes 1200 bought
>back when they cost a mere $599 - yep, not too long after the buggers
>came out.  Now, all this yammering is assuming we're talking about the
>external variety.   This is what we're talking about, right?
>
>				-Rusty-
>

As a matter of fact Rusty the ATXn on the newer models do support n=[0-4].
I'm not certain of the specific funtions but it does invoke the new features
of the current Hayes modems...


Scott R. Myers

myers@andromeda...myers@gold...srm@topaz...srm@remus >> .rutgers.edu

kfk9673@ritcv.UUCP (Karl Kingston) (05/11/87)

In article <339@wolf.UUCP> billw@wolf.UUCP (Bill Wisner) writes:
   < extra stuff removed... >
>
>I don't know about the Hayes 1200, but there are modems, such as the
>Volksmodem 12 and the ADC "Phone Modem" (what a name!) that will print the
>message BUSY rather than NO CARRIER. (Actually, the ADC prints things like
>"CONNECTION ESTABLISHED" and "BUSY SIGNAL" and "RING RESPONSE." Yes, it has
>ring detection.) And the Novation Apple Cat does even better. Given the right
>software on the Apple II, it can detect almost any kind of tone. Generate
>about any kind of tone, too.
>-- 
>Bill Wisner
>..{sdcsvax,ihnp4}!jack!wolf!billw

Don't forget the IBM 5842 2400 Baud Modem.  This modem has almost everything
including call monitoring on the screen.  Even if the modem detects a voice
on the line, and depending on the configuration, it'll request you to pick
up the handset.

Karl   


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Karl Kingston

UUCP:  ..!rochester!ritcv!kfk9673
BITNET:  KFK9673@RITVAX
         (If your site doesn't recognize RITVAX, use RITVAXC instead)