Telephones!

[Xenobius]

Hello I have a tiny problem here at my house.... I wish someone could give me a hand !

At my House I have 2 phone lines.

My Mothers is 123456 and mine is 987642

My mums line is downstairs and I got the other one upstairs.

Is there a circuit that can BOND these 2 together so that when I phone or she phones, it does not interfear but when I press a button, the phone downstair will ring if it is available AND i can talk to my mother (without goind downstairs) also I could actually call her but it would cost money ofcoarse and it is rediculuse to call INSIDE the same house!

Thanks

[hotwaterwizard]

Why not Make an Intercom.

[hotwaterwizard]

or if you have a couple of extra phones laying around.

[hotwaterwizard]

Here are some

Telephone Links
http://www.electronics-lab.com/projects/telephone/013/index.html

http://www.electronics-lab.com/projects/telephone/014/

http://www.electronics-lab.com/projects/telephone/015/index.html

http://www.electronics-lab.com/projects/telephone/016/index.html

http://www.geocities.com/iecmaster/circuits_tel/cir_tel002.html

http://www.ee.washington.edu/circuit_archive/circuits/F_ASCII_Schem_Tel.html#ASCIISCHEMTEL_010

http://www.geocities.com/iecmaster/circuits_tel/cir_tel007.html

http://www.electronicsforu.com/efylinux/circuit/feb2003/Simple%20Telephone%20Ring%20Tone%20Generator.pdf

http://www.techlib.com/electronics/telephone.html

http://www.hotspot.freeserve.co.uk/HOTSPOT/TLS/tlsframe.htm



http://www.hut.fi/Misc/Electronics/circuits/telephone_ringer.html

[Xenobius]

thanks a lot everyone for helping me out.. But I still do not know which one I need to build from these in the list.

just to remind you. I have 2 different telephone numbers 1234 and 5678 and I need to connect with the other one just like calling normally BUT without the charge.

These 2 numbers are in the same house so I can talk to my mother from upstairs to downstaris..

In other words the telephone lines are both here infornt of me !! All I want is a thing to connect them together in a way that when I am busy on the line NO ONE can listen to the call and they cannot phone me... they only succeded to contact me when I am not using thep hone. so if I am on thep hone they would not interrupt me.. and vise versa.. thankyou !!