hi ...... everyone
i would like to make a simple telephone with arduino ..... (simple) means a dont want to use a sim 900 module ..... i just want to connect arduino via a cable RJ11 to my telephone line........... i have an arduino nano and a keypad....... i would like to ask what module i should buy and from where .....
(my connection to telephone line ) i have adsl router in my house...... so the telephone line comes to my home uses a splitter for adsl and telephone(its the place i connect my only telephone) and from the adsl splitter a cable goes to router....... and from router to 3 pc i use......... via ethernet cables
ty in advance
Please read the sticky topics in Uncategorized - Arduino Forum to understand why your topic has been moved to a (more) suitable category.
Note:
In a number of countries you're not allowed to connect non-approved equipment to a telephone line.
In the US, to legally connect to the phone company network you need a Network Interface Device. They are probably still for sale even though land lines are not so common anymore. Google it.
Let's say you have a module that will connect to the splitter. What do you plan for the Arduino to do?
The NID is supposed to prevent any problems with things on the phone company side of the device. Back in the day when hams were connecting their radios to phone lines I don't remember them having to get any sort of approval from the phone company.
After the landmark lawsuit against the phone companies that resulted in things like answering machines to be allowed, all sorts of things became possible. We had several hams in our local computer club in the 70s and we all collaborated on various microprocessor controlled touch tone decoder, etc, to connect to the phone lines. The NID was key to doing that without getting any pushback from the phone company.
The OP is using DSL, so automatically there is nothing there at his end that interfaces directly to the telephone network. It is ALL digital at the end he is working with, so nothing analog relates.
OP, you must get the documentation for your DSL interface and follow that. There is NO module necessary.
Read up on POTS.
In my neck of the woods, ADSL and POTS coexist on the same copper.
1 Like
In that case, the "splitter", what ever that is, provides the necessary system protection.
What will the Arduino do?
not in my country ty
the arduino will make a call to my cellphone without speech ...... just call me once ..... it maybe will be used as a future alarm system
so i ask again what module so i use to connect my arduino to my telephone line........ i want to use an rj11 cable ....... not cellphone
ty in advance
Are you able to reveal which country you are in ?
1 Like
arduino will call my cellphone.......
Use a standard telephone line modem.
Most are intended for old-fashioned PC RS232 serial ports, so you will need a TTL to RS232 UART interface with level conversion, to connect it to an Arduino.
4 Likes
modem needs a personal computer to work with....... how can i use it with arduino?
No, just a UART serial connection.
1 Like
thats good ..... you are right ..... so i need an external modem i suppose...... with his power supply ..... how can i control it?
Look up "AT command set".
3 Likes