Steven Critchfield wrote:
On Fri, 2005-02-11 at 15:35 +1100, Eric Bishop wrote:
2. Is only a problem in 2-wire technologies (ie analog and BRI ISDN lines)?
It is just an analog problem. That is why a BRI can actually transmit
direct digital data instead of audio data.
There is enough spill from the earpiece to the mike on most phones, that
EC is required even on a digital phone.
Regards,
Steve
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