[Asterisk-Users] torisa rev b

[Steve Underwood]

If you are only crosscoupling them for testing, don't worry. Just 
connect them up and let them worry each other :-) Seriously, they will 
lock to each other and settle down somewhere. The VCXO has a pretty 
narrow range, so whereever they settle it cannot be too far from 8kHz.

Regards,
Steve


it wrote:

>Hi,Steve,
>     Can you tell me the different between the Rev B and Rev A? I want to
>config the span 1 of Torisa as pri_cpe and span 2 as pri_net and use a
>crosscable to link them to test the E1 in asteriskand. But the Rev A can't
>be a clock master,so it is impossible for me to test it.  Help me please.
>
>john
>
>
>----- Original Message -----
>From: "Steve Underwood" <steveu at coppice.org>
>To: <asterisk-users at lists.digium.com>
>Sent: Sunday, April 13, 2003 4:49 PM
>Subject: Re: [Asterisk-Users] torisa rev b
>
>
>  
>
>>horape at highconnection.com.ar wrote:
>>
>>    
>>
>>>¡Hola!
>>>
>>>torisa.c (from zaptel 0.50) says:
>>>
>>>#define MASTERVAL 0x41          /* Enable E1 master clock on Rev. B board
>>>      
>>>
>*/
>  
>
>>>Does that mean that there is a torisa revB? If so, are the schematics
>>>downloadable from somewhere? (www.zapatatelephony.org only has Rev. A
>>>ones)
>>>
>>>Does the Rev. A support E1? (just changing the DS2151 for DS2153, the DS
>>>crystal and closing the E1 jumpers, or something else is needed?)
>>>
>>>Thanks,
>>>
>>>      
>>>
>>Rev A works OK as a slave E1, but it cannot be a clock master. Rev B was
>>a minor update to fix that. The changes are quite minor. I don't know if
>>it got past the planning stage to actual artwork, though. As a T1 card
>>Rev A works OK as both a clock master and a clock slave. The changes you
>>describe will make Rev A work OK as a pair of clock slave E1 ports.
>>
>>Regards,
>>Steve
>>
>>    
>>