[asterisk-users] Newbie in China: Red alaram in Zaptel for E1

[Paul Hales]

Dan Austin wrote:
> John wrote:
>   
>> Thanks Steve for your suggestions.
>>     
>
>   
>>> In China you will generally get either MFC/R2 or EuroISDN. MFC/R2 is
>>> much more common.
>>>
>>>       
>
>   
>> This is exactly my current problem.
>> NETCOM in Shanghai just told my local contact it is an E1 and that's it.
>> I have no idea whether it is MFC/R2 or EuroISDN and so there is a lot of
>> trial and error, not to mention about communicating with the telco.
>> Is there anyway I could find out from zaptel what the line signal is?
>>     
>
> International installs are always fun.  I have had some luck getting a
> local employee to relay my questions about provisioning, but all to often
> the response is 'We use the standard settings...'.  At that point I
> resort to trial and error.
>
> I have setup a circuit in Shanghai, it is an E1, CRC4/HDB3 with the
> telco switch being/or compatible with AT&T 5ESS.  You should be able
> to get Netcom to tell you if the circuit is ISDN or not.  Asking
> if it is a PRI will just confuse them, but they do understand the
> question 'ISDN or not ISDN'
>
>   
>>> The only oddity with EuroISDN is that it often provided without CRC4.
>>> That doesn't make a lot of sense, but there it is. MFC/R2 seems to be
>>> universally provided without CRC4 in China.
>>>
>>>       
>> That's great info, Steve.
>>     
>
>   

Just to comment - this is a great thread. I am expecting that the answer 
will either be quite interesting or quite odd.

PaulH