asterisk users - Dec 2006 - TDM400P won't ring GM phone of mere 0.1B

This is rather bizarre: My TDM11 (one FXS) rings a $10 passive phone with REN of
1.0B, a cheap speaker phone of 0.3B, and a cordless phone with marked REN of
0.0B.  But it couldn't properly ring this 27935GE3-B (FCC ID G9H2-7930)
cordless phone rated at merely 0.1B.  Rarely, the phone will crack out an
occasional weak and abrupt beap, but never a normal ring.  Otherwise Asterisk
and TDM400P works with this phone, dialing, voice, callerID and all that. (In
fact, when the FXS "rings", the display lights up as it should.)

This is a dual-line 2.4 GHz cordless phone.  It rings normally when plugged into
wall jack.

Any idea?  Though not described in the manual specifications, Table B1 suggests
that an FXS module (S110M?) supports at least REN 3.

Yuan Liu

yliu11@hotmail.com wrote:
> This is rather bizarre: My TDM11 (one FXS) rings a $10 passive phone with
REN of 1.0B, a cheap speaker phone of 0.3B, and a cordless phone with marked REN
of 0.0B.  But it couldn't properly ring this 27935GE3-B (FCC ID G9H2-7930)
cordless phone rated at merely 0.1B.  Rarely, the phone will crack out an
occasional weak and abrupt beap, but never a normal ring.  Otherwise Asterisk
and TDM400P works with this phone, dialing, voice, callerID and all that. (In
fact, when the FXS "rings", the display lights up as it should.)
>
> This is a dual-line 2.4 GHz cordless phone.  It rings normally when plugged
into wall jack.
>
> Any idea?  Though not described in the manual specifications, Table B1
suggests that an FXS module (S110M?) supports at least REN 3.
>
> Yuan Liu_______________________________________________
>   
Have you tried toe boost ring voltage option then recompile Zaptel?
It is normally set to a fairly low voltage

John Novack

>From: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
> > >Have you tried toe boost ring voltage option then recompile
Zaptel?
> > >It is normally set to a fairly low voltage
> > >
> > >John Novack
> >
> > Thank you so much!  I googled a bit about how to change ring voltage
and
> > only found an old and suspended feature request from last year that
> > concerned wcfxs.c, which is now superceded by wctdm.c.  Yet the same 
>method
> > applies.  So I changed the value of RING_X from 0x0160 to 0x023A as
> > suggested for European countries (peak of 85V according to that 
>document)
> > but left frequency (RING_OSC) unchanged, like the following:
>
>To which phones does this apply? What bug number?
The feature request # is 4542, but I don't know any associated bug number, 
nor with what phones other people had to tweak.  My phone is a GE 
27935GE3-B. (Don't know what possessed me to say GM:-)

Yuan Liu
>                Tzafrir Cohen
>icq#16849755                    jabber:tzafrir@jabber.org
>+972-50-7952406           mailto:tzafrir.cohen@xorcom.com
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