View Single Post
  #14   Report Post  
Posted to sci.electronics.repair
legg legg is offline
external usenet poster
 
Posts: 436
Default Phone listening stops working

On Fri, 06 May 2016 16:34:10 -0400, Micky
wrote:

On Fri, 06 May 2016 07:41:27 -0500, legg wrote:

On Wed, 04 May 2016 08:38:21 -0400, Micky
wrote:

On Wed, 04 May 2016 07:51:16 -0500, legg wrote:

On Tue, 03 May 2016 23:06:33 -0400, Micky
wrote:

snip

I stick a DSL filter on the old phones as well, just to keep the line
impedances in a known state, for DSL integrity where it's needed (not
for phone quality).

Early Uniden hand-sets do funny stuff, but am aware of happy campers
as well. I don't use wireless here.

Sounds internal - AGC and compression in the voice handling - either
something detecting false levels on the mic, or a failing to return to
the Rx from Tx states ~flakey mike,


There are Rx and Tx states in a wired phone??

Depends on what chips are used. If it has wireless handsets in the
out-of-the-box package, it could use the same parts or firmware for
cost reasons - just using the wires to sub out the battery. Who knows.

RL