not necessarily. like you mention if both vwics use the onboard PVDMs, then they will both participate in the same clocking domain which means there is potential for slip. To get two clocking domains, you would have to add something like a NM-HDV with its own DSPs to create a second clocking domain.<div>
<br></div><div>Of course you could just order the T1 and try the open slot in the existing VWIC, you might get lucky and find that both are on the same clock. However, if you see slips, you'll probably need to order a NM.</div>
<div><br></div><div>Unless something has changed with the new VWIC3s ...?.?.?<br><div><br><div class="gmail_quote">On Wed, Feb 4, 2009 at 2:18 PM, Ed Leatherman <span dir="ltr"><<a href="mailto:ealeatherman@gmail.com">ealeatherman@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">My main concern is since both these are voice connections and they will be faxing over both links.. clock slips seem to cause trouble in that regard. Would adding the second VWIC eliminate the slip problem?<div class="Ih2E3d">
<br><br><div class="gmail_quote">
On Wed, Feb 4, 2009 at 9:52 AM, Estes, Timothy <span dir="ltr"><<a href="mailto:TimothyEstes@spherion.com" target="_blank">TimothyEstes@spherion.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left:1px solid rgb(204, 204, 204);margin:0pt 0pt 0pt 0.8ex;padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-US">
<div>
<p><span style="font-size:11pt;color:rgb(31, 73, 125)">I have this running on about 90 28XX routers in the field. Sprint
MPLS circuits on the data side and Verizon or AT&T PRIs. You have to set
network clock select to the PRI for it to come up, therefore the data circuit
slips. Out of the 90 sites, only 2 have required new VWICs because of errors.
The rest tolerate the slips. I see as low as 15 and as many as 90 slip seconds
on the data circuits. 40 or 50 seems to be the limit for me, your mileage may
vary.</span></p>
<p><span style="font-size:11pt;color:rgb(31, 73, 125)"> </span></p>
<p><span style="font-size:11pt;color:rgb(31, 73, 125)"> </span></p>
<p><span style="font-size:11pt;color:rgb(31, 73, 125)"> </span></p>
<p><span style="font-size:11pt;color:rgb(31, 73, 125)">Timothy Estes</span></p>
<p><span style="font-size:11pt;color:rgb(31, 73, 125)">Data Network Operations Engineer</span></p>
<p><span style="font-size:11pt;color:rgb(31, 73, 125)">ACS / Spherion</span></p>
<p><span style="font-size:11pt;color:rgb(31, 73, 125)">Ft. Lauderdale FL</span></p></div></div></blockquote></div><br><br clear="all"><br></div><div><div></div><div class="Wj3C7c">-- <br>Ed Leatherman<br>Assistant Director, Voice Services<br>
West Virginia University<br>
Telecommunications and Network Operations<br>
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