Switching on a PC over the telephone line

N

nikos

Guest
I am trying to find a circuit that I will be able to switch on my PC
that is 200 klm away (like pressing the switch toggle button
remotely). Does anybody has an idea ?

Thank you in advance

Nikos
 
nikos wrote:
I am trying to find a circuit that I will be able to switch on my PC
that is 200 klm away (like pressing the switch toggle button
remotely). Does anybody has an idea ?

Thank you in advance

Nikos
Click to expand...

A dial in DTMF decoder, with a four or six digit password. These
were common about 20 years ago. You dialed the number and the device
answers with a beep. Then you type the port number and password on the
phone's keypad. It then closes a relay for a half second for that
port. The ones we used had eight output ports and were used to select a
video feed (Via microwave STL) from a remote site.


Monroe Electronics used to make them, but I didn't see it on their
website.

There is a kit availible online, and you can likely find other
sources: http://www.ozitronics.com/remote.html#k140




--
You can't have a sense of humor, if you have no sense.
 
On Sat, 10 Sep 2011 19:21:38 -0400, "Michael A. Terrell"
<mike.terrell@earthlink.net> wrote:

nikos wrote:

I am trying to find a circuit that I will be able to switch on my PC
that is 200 klm away (like pressing the switch toggle button
remotely). Does anybody has an idea ?

Thank you in advance

Nikos


A dial in DTMF decoder, with a four or six digit password. These
were common about 20 years ago. You dialed the number and the device
answers with a beep. Then you type the port number and password on the
phone's keypad. It then closes a relay for a half second for that
port. The ones we used had eight output ports and were used to select a
video feed (Via microwave STL) from a remote site.


Monroe Electronics used to make them, but I didn't see it on their
website.

There is a kit availible online, and you can likely find other
sources: http://www.ozitronics.com/remote.html#k140



There was a kit called "Sweet Sixteen". It would decode all sixteen
Click to expand...
code pairs. I think I still have a couple of those around.
Does a modern cell phone respect DTMF anymore?

Tom
 
Tom Biasi wrote:
On Sat, 10 Sep 2011 19:21:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


nikos wrote:

I am trying to find a circuit that I will be able to switch on my PC
that is 200 klm away (like pressing the switch toggle button
remotely). Does anybody has an idea ?

Thank you in advance

Nikos


A dial in DTMF decoder, with a four or six digit password. These
were common about 20 years ago. You dialed the number and the device
answers with a beep. Then you type the port number and password on the
phone's keypad. It then closes a relay for a half second for that
port. The ones we used had eight output ports and were used to select a
video feed (Via microwave STL) from a remote site.


Monroe Electronics used to make them, but I didn't see it on their
website.

There is a kit availible online, and you can likely find other
sources: http://www.ozitronics.com/remote.html#k140



There was a kit called "Sweet Sixteen". It would decode all sixteen
code pairs. I think I still have a couple of those around.
Does a modern cell phone respect DTMF anymore?
Click to expand...

I have no clue, since I don't use a cell phone. I have a local
service only landline, a 'Magic Jack' & Skype. The first two are DTMF.
Tom
Click to expand...

--
You can't have a sense of humor, if you have no sense.
 
On Sat, 10 Sep 2011 16:03:02 -0700, nikos wrote:

I am trying to find a circuit that I will be able to switch on my PC
that is 200 klm away (like pressing the switch toggle button
remotely). Does anybody has an idea ?
Click to expand...
Wake-On-LAN. Or a modem.
 
On 2011-09-10, nikos <niioannou@gmail.com> wrote:
I am trying to find a circuit that I will be able to switch on my PC
that is 200 klm away (like pressing the switch toggle button
remotely). Does anybody has an idea ?
Click to expand...
There is commercial hardware for this. E.g. 19" rack mounted power
distribution systems with ethernet and serial ports.
You can log into these things and turn on and off the power ports.
Serial port means you can stick a modem on it set to auto-answer.
Dial in and turn it on.

http://en.wikipedia.org/wiki/Power_distribution_unit

Also, there are ways to do this over the Internet: ethernet
adapter/motherboard with WOL (wake-on-LAN) support.

http://en.wikipedia.org/wiki/Wake-on-lan

To use this, it behooves you have a router with some tool to support
this: e.g. Tomato Firmware (which runs on a Linksys WRT54GL and
others). In Tomato's web-based firmware application, there is a tool
where you can send a wake up packet to any hosts within the LAN by their
MAC address.

To log into your router, you, of course, need a static IP address, or
else dynamic DNS.
 
On Sat, 10 Sep 2011 19:32:29 -0400, Tom Biasi wrote:

On Sat, 10 Sep 2011 19:21:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


nikos wrote:

I am trying to find a circuit that I will be able to switch on my PC
that is 200 klm away (like pressing the switch toggle button
remotely). Does anybody has an idea ?

Thank you in advance

Nikos


A dial in DTMF decoder, with a four or six digit password. These
were common about 20 years ago. You dialed the number and the device
answers with a beep. Then you type the port number and password on the
phone's keypad. It then closes a relay for a half second for that port.
The ones we used had eight output ports and were used to select a video
feed (Via microwave STL) from a remote site.


Monroe Electronics used to make them, but I didn't see it on their
website.

There is a kit availible online, and you can likely find other
sources: http://www.ozitronics.com/remote.html#k140



There was a kit called "Sweet Sixteen". It would decode all sixteen code
pairs. I think I still have a couple of those around. Does a modern cell
phone respect DTMF anymore?
Click to expand...
The buttons don't make DTMF when you're dialing, but after you're
connected they do. How else would you talk to automated answer systems?

--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com
 
On 2011-09-10, nikos <niioannou@gmail.com> wrote:
I am trying to find a circuit that I will be able to switch on my PC
that is 200 klm away (like pressing the switch toggle button
remotely). Does anybody has an idea ?
Click to expand...
what sort of internet router do you use, can it be customised, perhaps
you can set it up to send a "wake on lan" signal?

--
⚂⚃ 100% natural

--- Posted via news://freenews.netfront.net/ - Complaints to news@netfront.net ---
 
On 2011-09-10, Tom Biasi <tombiasi@optonline.net> wrote:
Does a modern cell phone respect DTMF anymore?
Click to expand...
yes they send them so that users can interact with DTMF controlled
services like PABXs, banks, and answerphones.

--
⚂⚃ 100% natural

--- Posted via news://freenews.netfront.net/ - Complaints to news@netfront.net ---
 
On Sun, 11 Sep 2011 01:02:34 -0500, Tim <tim@seemywebsite.please>
wrote:

On Sat, 10 Sep 2011 19:32:29 -0400, Tom Biasi wrote:

On Sat, 10 Sep 2011 19:21:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


nikos wrote:

I am trying to find a circuit that I will be able to switch on my PC
that is 200 klm away (like pressing the switch toggle button
remotely). Does anybody has an idea ?

Thank you in advance

Nikos


A dial in DTMF decoder, with a four or six digit password. These
were common about 20 years ago. You dialed the number and the device
answers with a beep. Then you type the port number and password on the
phone's keypad. It then closes a relay for a half second for that port.
The ones we used had eight output ports and were used to select a video
feed (Via microwave STL) from a remote site.


Monroe Electronics used to make them, but I didn't see it on their
website.

There is a kit availible online, and you can likely find other
sources: http://www.ozitronics.com/remote.html#k140



There was a kit called "Sweet Sixteen". It would decode all sixteen code
pairs. I think I still have a couple of those around. Does a modern cell
phone respect DTMF anymore?

The buttons don't make DTMF when you're dialing, but after you're
connected they do. How else would you talk to automated answer systems?
Click to expand...
I could speak to it like most of the systems I encounter.
Thanks for the info.
I figured they don't produce the tones but the digit is encoded at the
other end, which would mean the kit wouldn't respond.

Tom
 
nikos wrote:

On Sep 11, 12:15Â pm, Jasen Betts <ja...@xnet.co.nz> wrote:

On 2011-09-10, Tom Biasi <tombi...@optonline.net> wrote:


Does a modern cell phone respect DTMF anymore?

yes they send them so that users can interact with DTMF controlled
services like PABXs, banks, and answerphones.

--
⚂⚃ 100% natural

--- Posted via news://freenews.netfront.net/ - Complaints to n...@netfront.net ---


By the way, following my initial request, I have installed a security
system (Paradox SP 7000) that is able to receive dial tones. This
security system provides 4 PGMs (Programmable Modules) that are
actually 4 relays. Each relay can be controlled through the dial tones
over the phone line.
The thing is that when I close the relay, it remains closed and I need
about 2-3 seconds in order to open it (through the dial tones). If I
connect the relay to a PC switch button then the computer switches on
and off because the 2-3 seconds duration is long.
So I need an extra circuit with maybe a new intermediary relay,
between the PGM relay and the PC switch button in order to force it
open after 500 millisecs of the activation time.
Does anybody have an idea on this ?

Nikos
Sure how ever, with out knowing just how deep you want to get into this?
Click to expand...
You can get a pulse Relay online from various sources or if you want
something very basic.. You can do this.





(N)
+
|
| \
+ o o
+--------------------------------+ 120VAC )|
| | )|
| | +)|
| ___ + |
+---+-----+>|+----+|___|-+-------+_ o +------------+
| )| NC contact
| 12VDC )|
+ _)|
120 AC --- +
--- |
+ |
| |
| |
(N)+---+--------------------+--------+
(created by AACircuit v1.28.6 beta 04/19/05 www.tech-chat.de)

The contacts on the 120VAC relay can be used to connect to your PC switch.

When energized, 120 Relay will pull in and when the 12DC relay
gets enough to close, it'll open its NC contacts and thus open
the 120VAC relay. This will give you a pulse.

THat is a very crude circuit and the load of the DC coil is a need to
know for the proper R to get correct dropping voltage. When this is
known, you then can select your cap to determine the delay on state.
The diode being just what ever you have around that can handle the line
voltage and at least 1 amp.

Of course, most of us here would use something a little more detailed
how ever, this one will allow you to use power that is commonly available.


Jamie
 
nikos wrote:
On Sep 11, 12:15 pm, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-09-10, Tom Biasi <tombi...@optonline.net> wrote:

Does a modern cell phone respect DTMF anymore?
yes they send them so that users can interact with DTMF controlled
services like PABXs, banks, and answerphones.

--
⚂⚃ 100% natural

--- Posted via news://freenews.netfront.net/ - Complaints to n...@netfront.net ---

By the way, following my initial request, I have installed a security
system (Paradox SP 7000) that is able to receive dial tones. This
security system provides 4 PGMs (Programmable Modules) that are
actually 4 relays. Each relay can be controlled through the dial tones
over the phone line.
The thing is that when I close the relay, it remains closed and I need
about 2-3 seconds in order to open it (through the dial tones). If I
connect the relay to a PC switch button then the computer switches on
and off because the 2-3 seconds duration is long.
So I need an extra circuit with maybe a new intermediary relay,
between the PGM relay and the PC switch button in order to force it
open after 500 millisecs of the activation time.
Does anybody have an idea on this ?

Nikos
A relay, switched by the controlled relays,put in series,
Click to expand...
for reliability.
The relay should have a capacitor in series with the coil,
and a leak resistor across the capacitor.
That will take care of the timing, try a few caps with the
chosen relay, for a proper timing, 100uf sounds right for a
starting value.
 
On Sep 11, 12:15 pm, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-09-10, Tom Biasi <tombi...@optonline.net> wrote:

Does a modern cell phone respect DTMF anymore?

yes they send them so that users can interact with DTMF controlled
services like PABXs, banks, and answerphones.

--
⚂⚃ 100% natural

--- Posted via news://freenews.netfront.net/ - Complaints to n...@netfront.net ---
Click to expand...
By the way, following my initial request, I have installed a security
system (Paradox SP 7000) that is able to receive dial tones. This
security system provides 4 PGMs (Programmable Modules) that are
actually 4 relays. Each relay can be controlled through the dial tones
over the phone line.
The thing is that when I close the relay, it remains closed and I need
about 2-3 seconds in order to open it (through the dial tones). If I
connect the relay to a PC switch button then the computer switches on
and off because the 2-3 seconds duration is long.
So I need an extra circuit with maybe a new intermediary relay,
between the PGM relay and the PC switch button in order to force it
open after 500 millisecs of the activation time.
Does anybody have an idea on this ?

Nikos
 
nikos wrote:
On Sep 11, 12:15Â pm, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-09-10, Tom Biasi <tombi...@optonline.net> wrote:

Does a modern cell phone respect DTMF anymore?

yes they send them so that users can interact with DTMF controlled
services like PABXs, banks, and answerphones.

--
⚂⚃ 100% natural

--- Posted via news://freenews.netfront.net/ - Complaints to n...@netfront.net ---

By the way, following my initial request, I have installed a security
system (Paradox SP 7000) that is able to receive dial tones. This
security system provides 4 PGMs (Programmable Modules) that are
actually 4 relays. Each relay can be controlled through the dial tones
over the phone line.
The thing is that when I close the relay, it remains closed and I need
about 2-3 seconds in order to open it (through the dial tones). If I
connect the relay to a PC switch button then the computer switches on
and off because the 2-3 seconds duration is long.
So I need an extra circuit with maybe a new intermediary relay,
between the PGM relay and the PC switch button in order to force it
open after 500 millisecs of the activation time.
Does anybody have an idea on this ?
Click to expand...

A simple 555 timer wired as a one shot & a small relay.


--
You can't have a sense of humor, if you have no sense.
 
On Tue, 13 Sep 2011 12:02:54 -0700 (PDT), nikos
<niioannou@gmail.com> wrote:

On Sep 11, 12:15=C2=A0pm, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-09-10, Tom Biasi <tombi...@optonline.net> wrote:

Does a modern cell phone respect DTMF anymore?

yes they send them so that users can interact with DTMF controlled
services like PABXs, banks, and answerphones.

--
=E2=9A=82=E2=9A=83 100% natural

--- Posted via news://freenews.netfront.net/ - Complaints to n...@netfron=
t.net ---

By the way, following my initial request, I have installed a security
system (Paradox SP 7000) that is able to receive dial tones. This
security system provides 4 PGMs (Programmable Modules) that are
actually 4 relays. Each relay can be controlled through the dial tones
over the phone line.
The thing is that when I close the relay, it remains closed and I need
about 2-3 seconds in order to open it (through the dial tones). If I
connect the relay to a PC switch button then the computer switches on
and off because the 2-3 seconds duration is long.
So I need an extra circuit with maybe a new intermediary relay,
between the PGM relay and the PC switch button in order to force it
open after 500 millisecs of the activation time.
Does anybody have an idea on this ?
Click to expand...
"Back in the day" it was common to use the switch on the
plug strip to turn on the computer, monitor, printer, etc
all at once. Now, it seems the computer's power button must
be pushed. But I wonder if it's possible to make the
computer revert to the old ways...something in the BIOS or
APM system, possibly? It seems like this would be an easy
thing for the manufacturer to have provided; maybe they did?

Best regards,


Bob Masta

DAQARTA v6.02
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Scope, Spectrum, Spectrogram, Sound Level Meter
Frequency Counter, FREE Signal Generator
Pitch Track, Pitch-to-MIDI
Science with your sound card!
 
On Wed, 14 Sep 2011 11:52:21 GMT, N0Spam@daqarta.com (Bob Masta) wrote:

On Tue, 13 Sep 2011 12:02:54 -0700 (PDT), nikos
niioannou@gmail.com> wrote:

On Sep 11, 12:15=C2=A0pm, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-09-10, Tom Biasi <tombi...@optonline.net> wrote:

Does a modern cell phone respect DTMF anymore?

yes they send them so that users can interact with DTMF controlled
services like PABXs, banks, and answerphones.

--
=E2=9A=82=E2=9A=83 100% natural

--- Posted via news://freenews.netfront.net/ - Complaints to n...@netfron=
t.net ---

By the way, following my initial request, I have installed a security
system (Paradox SP 7000) that is able to receive dial tones. This
security system provides 4 PGMs (Programmable Modules) that are
actually 4 relays. Each relay can be controlled through the dial tones
over the phone line.
The thing is that when I close the relay, it remains closed and I need
about 2-3 seconds in order to open it (through the dial tones). If I
connect the relay to a PC switch button then the computer switches on
and off because the 2-3 seconds duration is long.
So I need an extra circuit with maybe a new intermediary relay,
between the PGM relay and the PC switch button in order to force it
open after 500 millisecs of the activation time.
Does anybody have an idea on this ?

"Back in the day" it was common to use the switch on the
plug strip to turn on the computer, monitor, printer, etc
all at once. Now, it seems the computer's power button must
be pushed. But I wonder if it's possible to make the
computer revert to the old ways...something in the BIOS or
APM system, possibly? It seems like this would be an easy
thing for the manufacturer to have provided; maybe they did?
Click to expand...
Yes, that function (boot on power restore, or similar) is often an option in
BIOS.
 
On Wed, 14 Sep 2011, Bob Masta wrote:

"Back in the day" it was common to use the switch on the
plug strip to turn on the computer, monitor, printer, etc
all at once. Now, it seems the computer's power button must
be pushed. But I wonder if it's possible to make the
computer revert to the old ways...something in the BIOS or
APM system, possibly? It seems like this would be an easy
thing for the manufacturer to have provided; maybe they did?

Of course, in the old days the on/off switch actually switched power,
Click to expand...
so if you left it on in the equipment, it didn't matter whether it was
turned on there or from the power strip.

Now, a lot of equipment, computers included, keep a bit of power running
through it all the time, and the on/off switch is connected to some active
circuitry which then turns on the rest of the power.

And of course, some have pointed out that it is worked around in current
computers, but it's through compensation to make up for the change from
the old days.

Oddly, it should be easier nowadays to turn on a computer remotely, since
one can just short the switch terminals together with some low current
device, unlike in the old days when you'd have to turn on a relay that
could supply all the current the computer needed.

Michael
 
On 9/11/2011 7:03 AM, nikos wrote:
I am trying to find a circuit that I will be able to switch on my PC
that is 200 klm away (like pressing the switch toggle button
remotely). Does anybody has an idea ?
Click to expand...
You are not trying to make a IED, are you? :)


--
@~@ You have the right to remain silence.
/ v \ Simplicity is Beauty! May the Force and farces be with you!
/( _ )\ (Fedora 15 i686) Linux 3.0.4
^ ^ 17:27:01 up 2 days 17:15 0 users load average: 0.23 0.11 0.08
不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA):
http://www.swd.gov.hk/tc/index/site_pubsvc/page_socsecu/sub_addressesa
 
krw@att.bizzzzzzzzzzzz wrote:
On Wed, 14 Sep 2011 11:52:21 GMT, N0Spam@daqarta.com (Bob Masta) wrote:

"Back in the day" it was common to use the switch on the
plug strip to turn on the computer, monitor, printer, etc
all at once. Now, it seems the computer's power button must
be pushed. But I wonder if it's possible to make the
computer revert to the old ways...something in the BIOS or
APM system, possibly? It seems like this would be an easy
thing for the manufacturer to have provided; maybe they did?

Yes, that function (boot on power restore, or similar) is often an option
in BIOS.
Click to expand...
Where are these kids coming from? There's been wake-on-ring for freaking
DECADES!!!

http://en.wikipedia.org/wiki/Wake-on-ring

Is it just that modern technology has gone so far out there that you'd
have to do computer hacker/technology archaeology to find something that
actually accomplishes the same thing as they did back then, as simply as
they did back then?

Thanks,
Rich
 
On Wed, 14 Sep 2011 11:45:15 -0700, Rich Grise <richg@example.net.invalid>
wrote:

krw@att.bizzzzzzzzzzzz wrote:
On Wed, 14 Sep 2011 11:52:21 GMT, N0Spam@daqarta.com (Bob Masta) wrote:

"Back in the day" it was common to use the switch on the
plug strip to turn on the computer, monitor, printer, etc
all at once. Now, it seems the computer's power button must
be pushed. But I wonder if it's possible to make the
computer revert to the old ways...something in the BIOS or
APM system, possibly? It seems like this would be an easy
thing for the manufacturer to have provided; maybe they did?

Yes, that function (boot on power restore, or similar) is often an option
in BIOS.

Where are these kids coming from? There's been wake-on-ring for freaking
DECADES!!!
Click to expand...
Ring? Isn't that something grandpa's old *telephones* did? Everyone knows
you can't connect a computer to a telephone! One takes a six-pin connector
and the other eight!

http://en.wikipedia.org/wiki/Wake-on-ring

Is it just that modern technology has gone so far out there that you'd
have to do computer hacker/technology archaeology to find something that
actually accomplishes the same thing as they did back then, as simply as
they did back then?
Click to expand...
You mean like wakeup-on-LAN? ;-)

....or how about a switch?
 
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