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

[John Novack]

Tzafrir Cohen wrote:
> On Wed, Nov 25, 2009 at 11:05:52AM +0000, Mike wrote:
>   
>> On Wed, Nov 25, 2009 at 12:26:10PM +0200, Tzafrir Cohen wrote:
>>     
>>> On Tue, Nov 24, 2009 at 11:03:16PM +0000, 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  
>>>>         
>>> Should not be needed. This parameter means that your Asterisk system
>>> dials with pulses rather than tones (prefixing 't' rather than 'p' to
>>> the dial string sent to DAHDI). I suppose this is not really what you're
>>> after.
>>>
>>>       
>>>> 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?
>>>>         
>>> I wonder if anybody wants to follow up on 
>>> http://bugs.debian.org/546329 (formly http://bugs.debian.org/399772 )
>>>
>>>       
>> Thanks Tzafrir, that was it.  I have changed the fxs.debounce and
>> recompiled.  My rotary dialer lives again!
>>     
>
> So what will it break if I apply this patch to wctdm.c ?
>
> Any reason not to apply it?
>   
This fix has been around for several years, originally posted somewhere 
by Max Park, and many users have applied it to systems used with antique 
switching equipment.
I would hope it will find its way into the mainstream, and not just for 
debian systems.
PLEASE
For the 3 percent of users who use pulse dial phones!

It still doesn't make asterisk as forgiving as an exchange or PBX, way 
off speed dials and out of spec make break ratios will still fail, but 
many more will not.

John Novack

-- 
Dog is my co-pilot