[asterisk-bugs] [DAHDI-linux 0014261]: [patch] Generate VMWI neon pulses from FXS module to light NEON lamp on newer 'non intellegent phone'

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=14261 
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Reported By:                alecdavis
Assigned To:                dbailey
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Project:                    DAHDI-linux
Issue ID:                   14261
Category:                   wctdm
Reproducibility:            always
Severity:                   feature
Priority:                   normal
Status:                     assigned
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Date Submitted:             2009-01-16 15:03 CST
Last Modified:              2009-01-23 00:53 CST
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Summary:                    [patch] Generate VMWI neon pulses from FXS module to
light NEON lamp on newer 'non intellegent phone'
Description: 
Add Message Waiting Indicator method to light NEON lamp on low cost phones
with integrated Neon Lamp

Using /etc/dahdi/chan_dahdi.conf keyword mwisendtype=hvac

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 (0098515) alecdavis (reporter) - 2009-01-23 00:53
 http://bugs.digium.com/view.php?id=14261#c98515 
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Anyone intimately familiar with the Si3210 and Si3215 proslic.

The code although working well so far, has to have the linefeed register
(Direct Register 64 = 1) set to Forward Active mode before the RNGY RNGX
etc. registers can be set.

If the linefeed register is set for Reverse Active, and then the RNGY RNGX
and others are set, a trianglar 4HZ AC type waveform is generated (not
pulsed DC anymore), causing a phone's ringer to trip at 4HZ.

The application for this is where there are 2 different phones type on the
same line, where one supports LineReversal VMWI, and the other only
supports Neon VMWI.

SVN as of a few days ago supports LineReversal VMWI,
wctdm_neon_support.diff2.txt adds neon support.

Meantime:
  FSK MWI is virtually untouched, and is supported in parallel with 'lrev'
and 'neon'.
  LineReversal and Neon Generation are mutually exclusive. Would be nice
to support everything. 

Issue History 
Date Modified    Username       Field                    Change               
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2009-01-23 00:53 alecdavis      Note Added: 0098515                          
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