[Asterisk-Users] Brazilian Protocol

[Amaury Jacquot]

Steve Underwood wrote:
> Amaury Jacquot wrote:
> 
>> Daniel Bichara wrote:
>>
>>>
>>> Hi Alex,
>>>
>>>
>>> Alex G Robertson wrote:
>>>
>>>> Hi all,
>>>>
>>>> I would like to have some information about your TE410p and TE405p
>>>> cards compatibility with telephony protocols adopted in Brazil.
>>>>
>>>> - When in E1 mode, does it support R2 DIGITAL MFC 5C ?
>>>
>>>
>>>
>>>
>>> You need a R2 converter. R2lib is "under construction".
>>>
>>
>> but ? what is R2 ?
> 
> 
> If you don't know, then don't worry. Your life is simpler for it.
> 
> 
> 
> 
> 
> 
> Oh, OK. Its a trunk signalling system, based on dual tones (not DTMF - 
> other dual tones). It sucks. It makes no sense in the age of digital 
> networks. Its heavily used in South America, parts of Asia, and parts of 
> Eastern Europe for E1s.

ah, ok
it's signaling system 5, aka Q.140...
/me guesses blue boxing still works there :D

> Regards,
> Steve
> 
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