|
The UK uses a unique Master socket with a capacitor. Most of Europe uses RJ11. There are both kinds of Adaptor.
The RJ11 uses the inner two wires for Tip & Ring (the pair). The older UK 4 pole jack wiring was so pulse dialling would not "tinkle" the bell with the dialling pulses. So BT did their own weird connector and bell wiring is inner pair and T & R (voice pair) is outer pair, to make it even more incompatible.
Israel didn't adopt the RJ11 (used in Ireland and most of Europe), but the BT plug, without the capacitor in the Master socket and the RJ11 wiring. So phones bought in UK and plugged in, in Israel, don't work unless the cable is rewired or an adaptor used. Or two adaptors: UK BT to RJ11 (with a capacitor in it), then RJII to Israeli BT plug (only 2 wires direct).
Without the capacitor even a correctly wired real BT spec phone never rings, or fax never answers. Otherwise works.
Argos (in Ireland when here) gave out free UK BT to RJ11 adaptors (including capacitor, some don't have it). Currys didn't and they still sell gas cookers that don't fit Irish fittings at least 3 year ago.
|