[cisco-voip] 4000 series ISR & DSP

[Andrew Dorsett]

Yes it is separate clocking domains on the ISR4ks. So one card per provider
with its own DSPs.

Andrew


On Thursday, June 11, 2015, Brian Meade <bmeade90 at vt.edu> wrote:

> I'm pretty sure you do get the separate clocking domains on the 4400
> series if you use the slots on the PRI cards.
>
> On Thu, Jun 11, 2015 at 12:18 PM, Jason Aarons (AM) <
> jason.aarons at dimensiondata.com
> <javascript:_e(%7B%7D,'cvml','jason.aarons at dimensiondata.com');>> wrote:
>
>>  Not sure about 4351 architecture but the ISR series had a single PLL
>> (Phased Lock Loop) and the DSPs synced to a single source.  The only place
>> this really caused problems was fax/modems.  Workaround would be 1 box per
>> carrier for PRIs.
>>
>>
>>
>> Ask your Partner/Cisco AM/SE do some research on the 4351 architecture.
>>
>>
>>
>> *From:* cisco-voip [mailto:cisco-voip-bounces at puck.nether.net
>> <javascript:_e(%7B%7D,'cvml','cisco-voip-bounces at puck.nether.net');>] *On
>> Behalf Of *Mike Olivere
>> *Sent:* Thursday, June 11, 2015 9:38 AM
>> *To:* 'Cisco VoIP Group'
>> *Subject:* [cisco-voip] 4000 series ISR & DSP
>>
>>
>>
>>
>>
>> I saw a conversation few weeks back where there was a discussion on
>> mixing DSPs from the PRI cards and the motherboard. I have a scenario where
>> a customer wants to use a 4351 to terminate 3 voice T1's (1 PRI & 2
>> channelized ) along with SIP from a local carrier.
>>
>>
>>
>> From what I understand the 1 PRI is from one carrier and the 2
>> channelized T1s are from another. Do I need a (1) port T1 card and (2) port
>> card each with a separate DSP so I can have individual clocking domains? or
>> can I put a 4 port card in with (1) 128 channel DSP and still have
>> individual clocking domains?  Then I need a DSP on the motherboard to
>> support CUCM / CUBE functions, but I can't pull from the T1 cards to
>> satisfy any xcode or conf resources is that correct?
>>
>>
>>
>> Thanks for the help
>>
>> Mike
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> itevomcid
>>
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>>
>>
>
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