[net.micro] more telephone-modem problems

rs1@ihuxl.UUCP (07/12/83)

I recently purchased a commodore 64 with a vic-modem. I had
hoped to use it partly for working at home over the phone lines
instead of dragging a silent 700 home with me. I also
work for WEco. and had just purchased a brand new wall phone-
touch tone, that worked just fine with the silent 700. I
brought home my vic-modem (direct connect) and I couldn't get
the remote cpu prompt even tho I got carrier.  I tried another
wall outlet and the same occurred. I took the processor, software
and modem back to the commodore store and it all worked fine
with their phone.  I couldn't believe that my shiny new western
phone was at fault.  Finally, I took home my work phone and
found out that the problem was with my wall phone. I found
a refurbished GTE phone ( which one of my friends has to
rewire since it has hardwired and I needed a modular jack )
which is now working just fine.  So, if you have modem
problems, try a different phone.  I was surprised...

ricki simon - ihuxl!rs1

bigbob@megatest.UUCP (07/14/83)

I have an auto dial modem that uses pulse dialing (not touch tone)
[Cermetek] and found that with a new phone I purchased that the auto dial
function no longer works. This is a phone that has redial capability, etc.
and my guess is that it's powered off the phone line. When I use the modem
to dial, it pulses the line, and thereby power cycling the phone on and off,
and somehow disrupting the line. It seems my only solution is to get rid of
the phone.

chris@alberta (07/15/83)

I had a similar problem with my modem (Racal Vadic VA3451AD) as that reported
here and earlier: it would work fine without the phone or with a friend's
Radio Shack hand-held, but it wouldn't work with my touch-tone phone. After
mucking around, I finally found the problem, which may be a common one. The
telephone and modem only use two of the wires in the 4-pin connector. The
modem considers the other two to be a data control signal. My phone didn't
do anything with these wires, but it did have them both attached to the
same otherwise unused screw terminal - it had connected them together. I
moved one of the wires to another unused terminal, and the problem with
the modem vanished. Ma Bell, etc. would prefer you didn't fiddle with your
phone, so you can do the same thing by cutting one of the wires in your
modem cord (or disconnect it inside the modem). Hope this helps.

       Chris Gray
       ...!uw-beaver!ubc-vision!alberta!chris

Fbrown.Micom@udel-relay@sri-unix.UUCP (07/15/83)

Ricki,

There is also a problem with the newer WECO touch-tone desk phones.  The 
ones with the "chicklet over membrane" keypads.  You can tell these by
the lack of travel of the keys.  The Vic-Modem does not work well with
these models.

Frank Brown

dmmartindale@watcgl.UUCP (Dave Martindale) (07/17/83)

We have some Vadic 3451's around here that were purchased about a year
ago.  The ones which were ordered with the normal house-style jacks
came with a 2-way adapter with slots labelled "phone" and "modem".
The "modem" side had only two wires present, thus preventing
the connections on the other two from affecting the modem in any way.

ron@brl-bmd@sri-unix.UUCP (07/17/83)

From:      Ron Natalie <ron@brl-bmd>

Vadic modems come with a 2-for-1 modular adapter
plug for attaching a phone and the modem to the
same outlet.   The two holes in it are not the
same.  The one labled modem only has the center
two wires (red/green) passed through.

-Ron