Mark Rogers wrote:
Wayne Stallwood wrote:
However if you have broadband on the same line as your pulse dial phone you will most likely lose ADSL sync every time you dial (despite use of Microfilters etc)
That's interesting; is that from personal experience or do you have any references to that "feature" of pulse dial 'phones?
One to add to the ADSL fault finding "pot".
New phones which simulate pulse dialling (by clicking a number of clicks) may be ok - but the old rotary ones are done by a metal contact brushing over. This can cause minute sparks as it comes near (right before contact) which is the cause of a very large range of frequencies, in the same way that a spark-gap transmitter does. In the telephone, this would be isolated just to the phone line its communicating on, but if you have adsl on that line, it would cause pulses in the frequenceies. A standard micro filter will probably not be sufficient to block those pulses out, although you could build one that is better quality, (ie spending more then the budget < 10p price that all the commercial ones are built to).
JT