[hpsdr] "Syllabic Squelch"

[Ken N9VV]

I am interested in Syllabic VOX and now Syllabic Squelch.
I wonder why these techniques have disappeared from Ham
equipment. I am told Kenwood had them in the 840 or 870
but they can not be found in any new Ham gear.

Here is a link to Rohde & Schwarz showing the world that
this technique is still IMPORTANT and can be a sales tool
for prospective buyers:
Voice Processing Unit (VPU) ¸GN2110
<URL: 
http://cdn.rohde-schwarz.com/dl_downloads/dl_common_library/dl_brochures_and_datasheets/pdf_1/GN2110_en.pdf
 >
"Speech-selective squelch function, ie speech-controlled,
syllabic muting circuit"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
http://www.bhi-ltd.com/index.php/home.html
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Voice Operated Squelch kit
<URL: 
http://www.ebay.com/itm/VOS-Voice-Operated-Squelch-Audio-Muting-Kit-Form-/321145239752
 >
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I will continue to investigate this to learn more about it and
why it has not been continued as a feature of modern SSB communications?

rgds,
73 Ken N9VV