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<TITLE>Re: [cisco-voip] ISR G2 PVDM3 DSPs on backplane</TITLE>
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<FONT SIZE="4"><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:14.0px'><B>I am currently using PRIs from different vendors — AT&T and Integra — on the same router. Two (2) separate VWICs on the same 2851. VWIC2-1MFT-T1/E1. No problems with voice quality, errors, etc. Configured as follows:<BR>
network-clock-participate wic 0 <BR>
network-clock-participate wic 1 <BR>
network-clock-select 1 T1 0/0/0<BR>
Just thought I’d pass it along.<BR>
</B></SPAN></FONT></FONT><FONT FACE="Verdana, Helvetica, Arial"><B><FONT SIZE="2"><SPAN STYLE='font-size:10.0px'>-- <BR>
Jim Reed<BR>
Manager of Technical Services<BR>
Swift Communications, Inc.<BR>
970-384-9141 (Direct)<BR>
775-772-7666 (Cell)<BR>
Sorry, no faxes accepted.<BR>
Please send documents by eMail.<BR>
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On 6/28/10 3:44 PM, "Bill" <bill@hitechconnection.net> wrote:<BR>
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</SPAN></FONT><BLOCKQUOTE><FONT COLOR="#000080"><FONT SIZE="4"><FONT FACE="Arial"><SPAN STYLE='font-size:13.0px'>Are you sure that is the case currently? I think you can have multiple PRI’s inside the same router on an ISR but they can not be on the same VWIC. <BR>
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Jason said you can not have multiple PRI’s within the same router.<BR>
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<FONT SIZE="4"><FONT FACE="Tahoma"><SPAN STYLE='font-size:13.0px'><B>From:</B> Beck, Christopher [<a href="mailto:CBeck@usg.com]">mailto:CBeck@usg.com]</a> <BR>
<B>Sent:</B> Monday, June 28, 2010 4:40 PM<BR>
<B>To:</B> Bill; 'Jason Aarons (US)'; 'cisco-voip'<BR>
<B>Subject:</B> RE: [cisco-voip] ISR G2 PVDM3 DSPs on backplane<BR>
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<FONT COLOR="#1F497D">This is true on the 2800/3800 today (except in the case of the NM-NDV modules mentioned, but I don’t think so even in that case). It is because there is a “single” PLL clocking circuit shared for all PRI’s. The WIC must be configured to participate in that clocking circuit prior to setting up the PRI. I can’t remember any device that could handle this in 20 years of installing channel banks, muxes, routers, etc.<BR>
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That said, a lot of times it will work acceptably because the clocks are close enough, especially if the local loop provider is the same on all links. But, you have to test it to know in any case.<BR>
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-Chris<BR>
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</SPAN></FONT><FONT SIZE="4"><FONT FACE="Tahoma"><SPAN STYLE='font-size:13.0px'><B>From:</B> cisco-voip-bounces@puck.nether.net [<a href="mailto:cisco-voip-bounces@puck.nether.net]">mailto:cisco-voip-bounces@puck.nether.net]</a> <B>On Behalf Of </B>Bill<BR>
<B>Sent:</B> Monday, June 28, 2010 4:21 PM<BR>
<B>To:</B> 'Jason Aarons (US)'; 'cisco-voip'<BR>
<B>Subject:</B> Re: [cisco-voip] ISR G2 PVDM3 DSPs on backplane<BR>
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</SPAN></FONT><FONT COLOR="#000080"><FONT FACE="Arial"><SPAN STYLE='font-size:13.0px'>What? I know you could not do different Telco’s on the same two port card but you can’t do two telco’s in the same router? Is there an official response to this? Is there a specific defect I can reference with my Cisco AM? <BR>
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<FONT SIZE="4"><FONT FACE="Tahoma"><SPAN STYLE='font-size:13.0px'><B>From:</B> cisco-voip-bounces@puck.nether.net [<a href="mailto:cisco-voip-bounces@puck.nether.net]">mailto:cisco-voip-bounces@puck.nether.net]</a> <B>On Behalf Of </B>Jason Aarons (US)<BR>
<B>Sent:</B> Monday, June 28, 2010 4:12 PM<BR>
<B>To:</B> cisco-voip (cisco-voip@puck.nether.net)<BR>
<B>Subject:</B> [cisco-voip] ISR G2 PVDM3 DSPs on backplane<BR>
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A TAC engineer at Cisco Live confirmed you can’t have multiple voice PRIs from separate telcos come into a G2 with different clocks. For example you have a AT&T PRI, a Verizon PRI, a Century Link PRI, a Alltell PRI, a Paetec PRI all in the same router. You can’t clock the backplane to more than one source! You’ll get slips, etc audio will sound bad, faxes/modems will fail. Fix is separate routers. He said he thought a 2800 with DSPs on a NM-HDV module would work though. My exact question was can you carve up the backplane PVDM3 clocking for separate PRIs somehow.
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