Hello, ultramegaok
You will not be able to send any thing out to the phone line through a bridge rectifier!
The only thing the bridge rectifier is good for, on a phone line, is drawing power FROM the phone line to power some circuitry. You need to use a 600:600 isolation transformer. Go to
www.microchip.com and lookup application note AN854. There in Figure 1 is an example of what it takes (their engineer's opinion) to communicate over the phone lines using a PIC and a few discrete components.
Pretty much any circuit today uses the transformer to isolate the product from the phone line. There are several alarm dialers on the market that use opto-isolators and P-mos relays to connect to the phone line. Did you look at the site that I listed on my first reply?
BobK
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