That is strange. Latin America, Mexico included, is very much E1 
country. I was unaware any T1 existed there.

Steve

[EMAIL PROTECTED] wrote:

> I learn something every day.
>
> Mexico and some other countries in latin america actually uses a weird 
> combination of T1 and EuroISDN I am told.
>
> Jan
>
>
> Steve Underwood wrote:
>
>>[EMAIL PROTECTED] wrote:
>>
>>  
>>
>>>Steve Underwood wrote:
>>>
>>>    
>>>
>>>>[EMAIL PROTECTED] wrote:
>>>>
>>>> 
>>>>
>>>>      
>>>>
>>>>>I see in libpri that PRI_SWITCH_EUROISDN_T1 is coded differently from 
>>>>>PRI_SWITCH_EUROISDN_E1. What exactly is the T1 version of EuroISDN and 
>>>>>where do I find this standard?
>>>>>
>>>>>
>>>>>   
>>>>>
>>>>>        
>>>>>
>>>>ETSI. Where else would you expect to find a EuroISDN spec?
>>>>
>>>>Steve
>>>> 
>>>>
>>>>      
>>>>
>>>There are no special EuroISDN for T1 in ETSI that would be different 
>>>from an E1. I don't even think ETSI has a T1 spec?
>>>    
>>>
>>
>>It can be hard to find specifications in the ETSI system, because their 
>>document naming and search facilities are somewhat lacking. I never 
>>understood why it was specified, or who might use it. However, there are 
>>specific ETSI documents for EuroISDN over T1. I've stumbled on them in 
>>the past and been puzzled. As far as I recall, they say little that is 
>>surprising. Its just the same as over E1, but the last channel in 
>>channel D, and the maximum B channel are only 0 to 22.
>>
>>Regards,
>>Steve
>>    
>>

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