Re: New BT phone won't work with old lead
Leads commonly used with phones have an RJ11 plug on one end and a BT plug on the other. The problem is that most phones these days have the line connected to the middle two pins of the four, but the BT plug has it on the outer two pins. Therefore the lead has to rearrange the wires. This isn't always straightforward with the sort of flat cables that phones use: they lend themselves to straight-through connections, so there's often a little plastic lump behind one of the plugs that does the rearrangement.
There are some phones I've come across which use an RJ11 jack but with the line connected to the outer two pins, so a straight-through RJ11 to BT lead works. They tend to be older models intended purely for the UK market, in my experience, also having the ringer connected to one of the inner pins. No other country does it this way.
Summary: there are at least two ways of wiring a BT plug to an RJ11 jack, so it's not unusual for changing the cable to stop the phone working. Examine the wiring on the one that works closely and rewire the longer one to match. Chances are, if it's a new phone, it probably has the line on the middle two contacts.
Chris
|