[asterisk-users] 1950's UK rotary dial phone

[John Novack]

Way back when, the wctdm driver needed a fix to make it more agreeable 
to pulse dials in the US. I suspect this is also the case in the UK. 
Speed and make break ratio are more critical , as pulse detection isn't 
nearly as smart as a PSTN exchange
Search the wiki for more details.
How that applies to the current set is unknown to me
the suggested fix was never applied to the distributed code, and 
unfortunately there seems little interest in any support for pulse, or 
analog in general.


John Novack

Mike wrote:
> Folks,
>
> I've got one of those GPO 1950's rotary dial phones that I'm trying to
> get working in the UK.  I've got pretty much everything working with my
> TDM400, the phone rings and I can receive calls but I cannot dial with
> the rotary dialer.  I have set pulsedial=true or whatever the exact
> setting is and I can dial from the phone by lifting the receiver and
> tapping out the number on the hook.  However, using the rotary dialer
> does not work (works fine plugged into my phone line).  I have read
> about the possibilty that the pulse settings may need adjusting in
> kernel.h in the dahdi driver but I have no idea what to set them to.  I
> have tried tweeking them to various extents but I've not been able to
> bring it to life yet.  Does anyone have any experience getting this to
> work?  Does anyone know the specs for UK pulse dial?  How long should
> the pulses be and what is the gap between them?
>
> Thanks,
> Mike.
>   
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