Telephone Spammers

Started by Jim Thompson in sci.electronics.basics3 years ago 9 replies

I just experienced a telephone spammer who sent my own telephone number as the CID! Anyone else experienced that? Since I use Ooma, I...

I just experienced a telephone spammer who sent my own telephone number as the CID! Anyone else experienced that? Since I use Ooma, I wonder if I can't simply blacklist my own number? I'll ask support. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | ...


Telephone question

Started by Jim Thompson in sci.electronics.basics3 years ago 18 replies

Anyone have a clever solution to this problem... I have a one-line telephone, but two telephone lines in the house. Is there some way,...

Anyone have a clever solution to this problem... I have a one-line telephone, but two telephone lines in the house. Is there some way, perhaps with relays to recognize which line is ringing and have the one-line phone connected to the ringing line? (It's a honey-do problem... you know... "pretty phone, don't throw it away" :-) ...Jim Thompson...


On hold telephone message circuit

Started by Charles Jean in sci.electronics.basics11 years ago 2 replies

Is there a way to play a wav file over an open telephone line? Can the earphone output of a sound card be used? Would it need to...

Is there a way to play a wav file over an open telephone line? Can the earphone output of a sound card be used? Would it need to be amplified or attenuated? Capacitance coupled?


Re: DIY electromagnet under 100: Disappointing results

Started by Archimedes' Lever in sci.electronics.basics8 years ago 1 reply

On Thu, 08 Oct 2009 16:40:13 GMT, Jan Panteltje wrote: > Bell accidently got the telephone working, Bell did not invent the...

On Thu, 08 Oct 2009 16:40:13 GMT, Jan Panteltje wrote: > Bell accidently got the telephone working, Bell did not invent the telephone. Meucci did.


how I can connect 89c51serial port to telephone lineto send data?

Started by Anonymous in sci.electronics.basics10 years ago 6 replies

dear all, I try to send vedio from cctv via telephone line I connect the cctv camera output to ADC and the output of the ADC to Atmel...

dear all, I try to send vedio from cctv via telephone line I connect the cctv camera output to ADC and the output of the ADC to Atmel 89c51 micocontroller to send the data serial but I want to connect the output of the atmel89c51 to the telephone line please help? what the next step best regards yar


Handset telephone amplifier

Started by SBS in sci.electronics.basics10 years ago 17 replies

Hi, I have to build a telephone handset amplifier which has to amplify both the speaker on the ear (incoming sound) and the mic (outgoing...

Hi, I have to build a telephone handset amplifier which has to amplify both the speaker on the ear (incoming sound) and the mic (outgoing voice). It has to be powered by 3xAA/AAA batteries or 1x9V battery. Can you please suggest me a tested scheme? Rgeards.


Simple Telephone Circuit

Started by Tim in sci.electronics.basics8 years ago 9 replies

Hello, My nine-year-old son is building an "old fashioned" telephone switchboard, where you have some phone extension boxes with microphones...

Hello, My nine-year-old son is building an "old fashioned" telephone switchboard, where you have some phone extension boxes with microphones and speakers (picture old-school holding the speaker to your ear with the microphone on the box). When you pick up an extension, a light goes on, and the "operator" plugs into the line, talks to the customer ("Get me the police!") and then you press a...


Question - how to hook up telephone through stereo?

Started by Anonymous in sci.electronics.basics11 years ago 4 replies

Hello I have a question that I'm desperately searching an answer for. I am wondering if it is possible (I'm pretty sure it is) to hook up...

Hello I have a question that I'm desperately searching an answer for. I am wondering if it is possible (I'm pretty sure it is) to hook up the telephone through my stereo (or even the computer). I have a group meeting to host at my place, and would like to have a friend who will be calling in via phone participate. But I want to avoid having to use speakerphone, since speakerphone is always c...


Telephone Advisory

Started by Jim Thompson in sci.electronics.basics2 years ago 1 reply

Telephone Advisory... When I am out of the office my calls automatically roll to my cellphone. If I am in a meeting and have my cellphone...

Telephone Advisory... When I am out of the office my calls automatically roll to my cellphone. If I am in a meeting and have my cellphone "quieted", call divert into the cellphone's voice-mail, which answers with a number you didn't dial... don't panic, leave a message. A caller from the Netherlands this morning hung up on the voice-mail. Please call again ;-) ...


DSL Problem

Started by sonyavdz in sci.electronics.basics7 years ago 3 replies

I own a business and have my home and business on the same property. Previously I have had the Dsl from my business (which is on the front of the...

I own a business and have my home and business on the same property. Previously I have had the Dsl from my business (which is on the front of the property)tied to my home by crossing wires from hook up box by business and running them back to my home using telephone companies existing telephone lines. Therefore, when the business phone rings, it also rings at my house, and to get internet at hom...


Re-post -- EDT [European Deaf Telephone] and EDTN are the TDD protocols used in Switzerland

Started by Radium in sci.electronics.basics10 years ago 2 replies

Hi: EDT [European Deaf Telephone] and EDTN are the TDD protocols used in Switzerland. Where can I find technical information about the...

Hi: EDT [European Deaf Telephone] and EDTN are the TDD protocols used in Switzerland. Where can I find technical information about the EDT/ EDTN? Also, I would like to hear some tones resulting from the remote EDTs/EDTNs located in Switzerland. I live in USA, so if I dial an EDT/ EDTN number to Switzerland, I will hear both the EDT/ED


EDT [European Deaf Telephone] and EDTN are the TDD [Telecommunications Device for the Deaf] protocols used in Switzerland. Where can I find tones/numbers?

Started by Radium in sci.electronics.basics10 years ago 9 replies

Hi: I've posted this before but never got a rational scientific response. I apologize profusely for the repetition and any annoyance it...

Hi: I've posted this before but never got a rational scientific response. I apologize profusely for the repetition and any annoyance it causes but I am really interested in this. EDT [European Deaf Telephone] and EDTN are the TDD [Telecommunications Device for the Deaf] protocols used in Switzerland. Where can I find technical information about the EDT/EDTN? Also, I would like to hear s...


EDT [European Deaf Telephone] and EDTN are the TDD [Telecommunications Device for the Deaf] protocols used in Switzerland. Where can I find numbers/tones?

Started by Radium in sci.electronics.basics10 years ago 1 reply

Hi: I've posted this before but never got a rational scientific response. Sorry for the repetition and any annoyance it causes but I am...

Hi: I've posted this before but never got a rational scientific response. Sorry for the repetition and any annoyance it causes but I am really interested in this. EDT [European Deaf Telephone] and EDTN are the TDD [Telecommunications Device for the Deaf] protocols used in Switzerland. Where can I find technical information about the EDT/EDTN? Also, I would like to hear some tones result...


EDT [European Deaf Telephone] and EDTN are the TDD protocols used in Switzerland

Started by Radium in sci.electronics.basics10 years ago 7 replies

Hi: EDT [European Deaf Telephone] and EDTN are the TDD protocols used in Switzerland. Where can I find technical information about the...

Hi: EDT [European Deaf Telephone] and EDTN are the TDD protocols used in Switzerland. Where can I find technical information about the EDT/ EDTN? Also, I would like to hear some tones resulting from the remote EDTs/EDTNs located in Switzerland. I live in USA, so if I dial an EDT/ EDTN number to Switzerland, I will hear both the EDT/EDTN tones as well as the tones resulting from negotiation...


Part Search

Started by lerameur in sci.electronics.basics9 years ago 3 replies

Hello, anybody has the datasheets for the following two parts: T25089 and MK50981N both of them should be TELEPHONE DTMF DIALER,16-PIN...

Hello, anybody has the datasheets for the following two parts: T25089 and MK50981N both of them should be TELEPHONE DTMF DIALER,16-PIN DIP Thank you


remote monitoring

Started by alitufan in sci.electronics.basics11 years ago 1 reply

I need to help for my project which is telemetry disagn for to sent sun car's or hydromobile's information(current, voltage,speed,...)...

I need to help for my project which is telemetry disagn for to sent sun car's or hydromobile's information(current, voltage,speed,...) with mobile telephone via RS232 to pitstop.


Switching on a PC over the telephone line

Started by nikos in sci.electronics.basics6 years ago 45 replies

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)....

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


answering machine

Started by Eve L Dewer in sci.electronics.basics11 years ago 3 replies

I am seeking a telephone answering machine that will only record the call unless a password is provided, and will then ring the phone. Is...

I am seeking a telephone answering machine that will only record the call unless a password is provided, and will then ring the phone. Is there such a thing?


Telephone parts?

Started by Ivan Vegvary in sci.electronics.basics4 years ago 5 replies

One of the discounters in Portland is selling "slim-line" phones (land line, brand new) for $ 2.50 each. Is this a bargain for parts? Anything...

One of the discounters in Portland is selling "slim-line" phones (land line, brand new) for $ 2.50 each. Is this a bargain for parts? Anything fun and usable inside? Thanks Ivan Vegvary


Why is a phone circuit plugged into 115 Volts

Started by searoom in sci.electronics.basics11 years ago 10 replies

I just bought a house in Vallejo, California and found a telephone wire in one room leading to a plug that is plugged into a 115 Volt outlet......

I just bought a house in Vallejo, California and found a telephone wire in one room leading to a plug that is plugged into a 115 Volt outlet... Anyone know why? Thanks.