"pulse dialling isn't available anymore? "
It certainly is available, BT support it still, and most cable suppliers do too, and you can get VOIP adaptors that support pulse dial phones too...
The only issue is these days the hardware at the exchanges is all digital, so they're very exacting as to what rate the phones pulse at, and they must be around 10 pulses per second (pps), with some tolerance either way, so if the dial isn't properly looked after and adjusted, it'll not dial, my GPO 746 needs it's dial adjusting cos it's slightly out of the 10pps rate, and will not break dialtone, but all my other phones that I've used on the line happily dial...
The fun thing about the original Trimphones though is they had a lovely glow in the dark dial, and the glowing was provided by a nice radioactive source, a tube of Tritium behind the dial, though these days the stuff has past it's best and doesn't glow, it still poses a radiation hazard, and can only be disposed of in some specialist locations... :S
Later models (both rotary and pushbutton) lacked the glowing part due to the concerns about health related to the radioactivity, as it was during a time when people feared anything to do with radiation (despite the fact they were happy to have radiation in the form of TV & radio signals!!), so they dropped the Tritium to keep people happy...
Some people remove the tritium tube when they restore them,and either leave the phone as-is, or they paint the back of the dial with modern glow in the dark paints, restoring the glow, but without the dose of radiation every time you dialled...
Personally I'm not keen on the Trimphone design, or the chirping tone-ringer, I prefer my bells and big weighty phones...
