[VoIP] Asterisk-Adtran dial rate

[John Novack]

ikjtel wrote:
> Kirt
>
> The "PULSEAFTERTIME" is merely the interdigital delay
> value.  You'll need to actually change the PULSEMAKE
> and PULSEBREAK ones, which I believe are directly in
> milliseconds.  
>
> Also, should have asked this last time, does the
> Varian card use stock drivers, or does it include its
> own proprietary drivers?
>
>   
Varion makes a patch to the stock zaptel drivers for the tor3 card.
The earlier tor2 card substitutes one rbt file.
govarion.com/tor3 has all the information.
They supplied certain versions patched, and then, after mynag, a patch 
file for any of the zaptel 1.2 releases, given that Digium kept on 
making changes.

> If absolutely necessary to prove whether the values
> are getting overridden by unknown actors, a 'printk'
> could be added to print out the actual values in
> effect...
>
> Max
>   
Beyond my pay grade!

John Novack


> --- Kirt Stanfield <kirtley.stanfield at comcast.net>
> wrote:
>
>   
>> Max,
>>
>> I changed 'ZT_DEFAULT_PULSEAFTERTIME' to 900,
>> rebuilt everything, and 
>> rebooted. I see no change in the PPS. Also m/b has
>> always dispalyed as 60/40
>>
>> So I suspect these are in fact being overidden
>> somewhere.
>>
>> Kirt
>> ikjtel wrote:
>>
>>     
>>> Replying on-list in the event that anyone else has
>>> commentary to add.............
>>>
>>> I believe there may be two separate issues here. 
>>> First, the parameters you mention should be
>>>       
>> tweakable
>>     
>>> via zaptel.h, specifically
>>> zaptel.h:#define        ZT_DEFAULT_PULSEMAKETIME 50
>>>       
>>   
>>     
>>> /* 50 ms of line closed when dial pulsing */
>>> zaptel.h:#define        ZT_DEFAULT_PULSEBREAKTIME
>>>       
>> 50  
>>     
>>> /* 50 ms of line open when dial pulsing */
>>> zaptel.h:#define        ZT_DEFAULT_PULSEAFTERTIME
>>>       
>> 750 
>>     
>>> /* 750ms between dial pulse digits */
>>>
>>> [Note, it is theoretically possible for user-space
>>> (ztcfg) to override these, although I don't believe
>>> this is currently implemented]
>>>
>>> [Note 2, I believe that these values are not
>>>       
>> correct
>>     
>>> for true Bell System dials, the ratio should be
>>>       
>> ~60/40
>>     
>>> not 50/50]
>>>
>>> The second issue is that several users have
>>>       
>> reported
>>     
>>> erratic pulsing, which I have noticed too, just by
>>> listening the problem is clearly audible.  Instead
>>>       
>> of
>>     
>>> hearing regularly spaced pulses you hear plainly
>>>       
>> that
>>     
>>> the spacing is irregular.
>>>
>>> Try connecting a butt set (in monitor mode) to the
>>> connection and listen to the outpulsing.   Best way
>>>       
>> to
>>     
>>> test this is to use a string of several 'zero'
>>> digits...
>>>
>>> I recently was able to grab an FXO card for my
>>>       
>> channel
>>     
>>> bank.  When it shows up (and when I get it set up)
>>> I'll try to duplicate the problem.  I have released
>>>       
>> an
>>     
>>> asterisk dial speed app that will also help
>>>       
>> pinpoint
>>     
>>> it.  See URL
>>>
>>> http://www.lightlink.com/mhp/dialtest/
>>>
>>> Max
>>>
>>> --- Kirt Stanfield <kirtley.stanfield at comcast.net>
>>> wrote:
>>>
>>>  
>>>
>>>       
>>>> Max,
>>>>
>>>> I hope all is well with you.
>>>>
>>>> Early this year I installed a Varian T1 card in my
>>>> asterisk machine, and 
>>>> connected it to an adtran channel bank. The
>>>>         
>> channel
>>     
>>>> bank has 5 FXS cards 
>>>> and 1 FXO card. The former is connected to ground
>>>> start 2 way trunks on 
>>>> my step switch. The latter is connected to the
>>>> incoming selectors on my 
>>>> step switch.
>>>>
>>>> In general the above configuration has performed
>>>> well, with a tremendous 
>>>> improvement in voice quality.
>>>>
>>>> I have however seen evidence of misdialing into
>>>>         
>> the
>>     
>>>> switch via the FXO 
>>>> card. I finally wrote a php script to dial over
>>>>         
>> and
>>     
>>>> over again, and from 
>>>> that I have deduced that there is about a 5-10%
>>>> misdial rate. I have now 
>>>> place a Metro-Tel TPM32  'digit grabber' in the
>>>> circuit. That indicates 
>>>> that dialing is taking place at a rate of 13pps,
>>>> instead of 10pps, which 
>>>> I suspect is the reason why I am seeing the error
>>>> rate that I am.
>>>>
>>>> So my question is - can you tell me any place(s)
>>>>         
>> in
>>     
>>>> the asterisk or the 
>>>> drivers that I could adjust so as to slow down the
>>>> dial rate?
>>>>
>>>> Thanks,
>>>> Kirt
>>>>
>>>>
>>>>    
>>>>
>>>>         
>>>
>>>
>>>       
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