Searching \ for 'Books fro Answering Machine project' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: techref.massmind.org/techref/index.htm?key=books+fro+answering
Search entire site for: 'Books fro Answering Machine project'.

Truncated match.
PICList Thread
'Books fro Answering Machine project'
1998\01\02@095551 by casmith

flavicon
face
Hi,
  can anyone recommend any good books that explains how a telephone
works from the household perspoective. I am building a answering machine
but I need to know how the rings signal are sent, the voltage levels on
the lines and how the voice data is sent.

Cary Smith

1998\01\02@195040 by Harold Hallikainen

picon face
Cary,

       You might have a look at part 68 of the FCC Rules at
http://hallikainen.com/FccRules  .  It deals with direct connection to
the public switched telephone network.  Also, various companies make Data
Access Arrangements (DAA) that take care of the line interface.
Companies that come to mind are Clare and Cermetek.

Harold


On Fri, 2 Jan 1998 09:49:56 -0500 Cary Smith <spam_OUTcasmithTakeThisOuTspamlynx.dac.neu.edu>
writes:
>Hi,
>   can anyone recommend any good books that explains how a telephone
>works from the household perspoective. I am building a answering
>machine
>but I need to know how the rings signal are sent, the voltage levels
>on
>the lines and how the voice data is sent.
>
>Cary Smith
>

More... (looser matching)
- Last day of these posts
- In 1998 , 1999 only
- Today
- New search...