thx Baktha, I don't see a reason to use the pass-through for the lab purposes either... let's wait and see if someone comes up with some other opinion. for the CAC: well, if the requirement states to have x calls between BR1 and HQ, my guess is that you need to have RSVP applied between BR1 and HQ, and that GK trunk needs to be in the location HQ. If the GK is placed in a seperate DP with a location that has no RSVP with any other locations (like in the ipexpert proctor guide), then calls going from BR1 to CME over GK trunk will not be subject to RSVP cac , although these calls traverse the BR1 link to HQ.. I don't see how the rquirement can be met in that case... cheers, Juan
Op 28 maart 2012 19:01 schreef Baktha Muralidharan <[email protected]>het volgende: > Hi Juan > > As for CAC, guess one would have to consider > > - peak call volume > - WAN QoS to decide if location-based CAC is [also] needed. > > If WAN QoS guarantees enough bandwidth for the anticipated peak volume, > then, not sure we need the local-based CAC [RSVP or otherwise] > > As for pass-through, my experience is you only need the codec that will be > used, in this case, the g.729r8. pass-through would be needed if you are > plan to do such things as T.38 fax. > > thanks, > /Batkha > > > >> Message: 3 >> Date: Wed, 28 Mar 2012 16:33:29 +0200 >> From: Juan Lopez <[email protected]> >> To: CCIE Study <[email protected]> >> Subject: >> Message-ID: >> <CANpj6cyy3bDV8OvmNei= >> [email protected]> >> Content-Type: text/plain; charset="iso-8859-1" >> >> >> In lab 10A, HQ devices are placed in DP_HQ with location HQ. GK/SIP trunk >> are placed in seperate DP, with location >> hub_none and no RSVP applied. >> So when calling from BR1 phone to CME over GK trunk, no CAC is enforced at >> the UCM. But the calls go over the FR link, >> as the FR setup is hub-and-spoke. Considering this topology (versus MPLS) >> : >> Shouldn't CAC be enforced (RSVP enabled on the hub_none location) to limit >> the amount of calls from BR1 to HQ - by extension to CME? I understand GK >> CAC can be used to contol the amount of calls between the UCM cluster and >> CME - but in this case we need to have CAC on the link BR1<> HQ too. >> >> Also, what is the use of codec pass-through in the RSVP MTP ? Calls use >> g729 over the WAN (normally) - so what scenario exsits to have codec >> pass-through configured with g729 as fallback? why not simply use g729r8 >> as >> codec, without the passthrough (considering no video is involved here) >> >> thx for sharing thoughts! >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> </archives/ccie_voice/attachments/20120328/94dfa20d/attachment-0001.html> >> >> ------------------------------ >> >> _______________________________________________ >> CCIE_Voice mailing list >> [email protected] >> http://onlinestudylist.com/mailman/listinfo/ccie_voice >> >> >> End of CCIE_Voice Digest, Vol 73, Issue 107 >> ******************************************* >> > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com <http://www.platinumplacement.com/> >
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