[cisco-voip] Avoid Clocking issues with PRI

[Steven Sarte]

Take a look at this white paper:
http://www.cisco.com/en/US/prod/collateral/routers/ps5854/prod_white_paper0900aecd805b9915.html

Under the section titled: Clocking and Timing Options

Thanks,
Steven

On Tue, Oct 16, 2012 at 5:32 PM, Jason Aarons (AM)
<jason.aarons at dimensiondata.com> wrote:
> This doesn’t work when you have PRIs from different providers.
>
>
>
> The original VWIC2 has a single PLL and backplane could not clock from
> multiple sources.
>
>
>
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Roger Wiklund
> Sent: Tuesday, October 16, 2012 4:40 PM
> To: Steven Sarte
> Cc: cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] Avoid Clocking issues with PRI
>
>
>
>
>
> Dunno about the NM, I just use network-clock-select 1 e1 x/y/z and
> ensure you have clock source line. That's enough to keep it slips
> free.
>
> Regards
> Roger
>
> On Tue, Oct 16, 2012 at 10:28 PM, Steven Sarte <steven.sarte at gmail.com>
> wrote:
>> I have two SP's for my PRI's on a 2921 currenty using a
>> VWIC3-4MFT-T1/E1. I opened a Cisco Partner case and they told me you
>> can avoid timing slips by using a Network Module PRI, like a
>> NM-HDV2-T1/E1 and a VWIC3-4MFT-T1/E1 in the WIC slots.
>>
>> Has anyone configured this before? What would the clocking
>> configuration look like. I did open a Cisco TAC case but he was not
>> very helpful in his first reply.
>>
>> Thanks in advance,
>> Steven
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