caller id

sam999

sam
[OP]
Regulars
Apr 15, 2007
444
1
hi, does using caller id affects broadband, and do we have to enable it from exchange.
 

seshu

Listener
Regulars
Mar 31, 2006
1,255
7
caller id for the phone has to be enabled at the Exchange . And
pls see this topic for the other part of your query .
 

amish

Star gazer
Regulars
Jul 3, 2006
24,699
1,068
Mumbai
he knows that thread as he posted there just day b4
 


sam999

sam
[OP]
Regulars
Apr 15, 2007
444
1
but i have not got answer, and the post itself was confusing, and after postingon that post i have not see it again, cli , was confusing term,.
 

seshu

Listener
Regulars
Mar 31, 2006
1,255
7
^ caller ID for the phone has no relation with the broadband speed .
 

shethpratik

Newbie
Dec 18, 2007
2
0
I'm tryin to use the caller identification function in a project. For this i need to read the caller id of the incoming call using a microcontroller. So i need the encoding technique and the code word for the caller id used in india.... could some1 help me out???
 


essbebe

MODERATOR
Regulars
Aug 20, 2006
9,804
81
@shethpratik
Welcome to Broadbandforum.in.
Try Google/Yahoo search engines. I just tried the term "DTMF coder ",
Duel Tone Multi Frequency (DTMF Electronic Circuits
You can choose the link you need.
Another coding system is FSK.
Nowadays telephone sets come for dual mode operation.( DTMF enabled and FSK enabled). Hope you can take off now independently.
 

shethpratik

Newbie
Dec 18, 2007
2
0
hmm thnx for tht, have read n searched a lot regardin dtmf n fsk encoding.... afaik, bsnl sends the caller id encoded using dtmf signal... but how its sent over the line, i mean the line voltages of the signals, and their duration etc. is wht i aint able to find... i'd also wanted to kno how the word is encoded, as in if any start bits or nething are transmitted. the whole project is to be implemented using a microcontroller/peripheral electronics. thts why i need these details.