my thoughts are if you want to use QoS you actually can't do a lot ob CAC with QoS you will degrade the quality of the call, but i don't think you can fully implement CAC with QoS. this is just my thought though. i've used only 2 types of CAC mechanisim. locations CAC or GK CAC my 2 cents hth
2011/6/22 Stephen Manuel <srman...@bellsouth.net> > That’s what I thought, but have not tested it to know for sure. **** > > ** ** > > As a follow up, as a general design what would be better. **** > > ** ** > > Using the Location setting as a form of Call-Admission-Control, or use > various QOS and IOS mechanisms to implement CAC on the Gateway Routers. ** > ** > > ** ** > > IMO, I would rather have CAC implemented on the Routers, leaving UCM to > process calls, which is why I have usually set the Audio Bandwidth setting > under Locations to Unlimited. **** > > ** ** > > Thanks, **** > > ** ** > > Stephen Manuel**** > > ** ** > > *From:* Cristobal Priego [mailto:cristobalpri...@gmail.com] > *Sent:* Wednesday, June 22, 2011 2:37 PM > *To:* Stephen Manuel > *Cc:* ccie_voice@onlinestudylist.com > *Subject:* Re: [OSL | CCIE_Voice] UCM LOCATION QUESTION**** > > ** ** > > Stephen, > > the call will fail > you're going to get a message on the phone saying "not enough bandwidth" > and the call will drop**** > > 2011/6/22 Stephen Manuel <srman...@bellsouth.net>**** > > Experts, **** > > **** > > I have a somewhat basic question just clear up something that is lingering > in my mind. **** > > **** > > The example is this:**** > > **** > > In a multiple remote location site company, with a Centralized UCM > architecture, each site has it’s own device pool, region, and location > settings. **** > > **** > > All the DN’s on the phones for all sites are in the same PT, meaning calls > between sites are on net via their existing WAN infrastructure and not the > SIP Trunk/PSTN. **** > > **** > > Remote site A is rather large 50-60 phones.**** > > **** > > Remote site B is rather small 10-15 phones. **** > > **** > > Calls between regions use g729**** > > Calls to the PSTN using a SIP Trunk use g711**** > > **** > > The location setting for site A is unlimited.**** > > The location setting for site B is 256**** > > **** > > What I am wondering is this, Site B has 3 calls to the PSTN using the SIP > Trunk using g711 @ 80k per call which equals 240k. The SIP trunk is also in > it’s own Device Pool, region, etc…**** > > **** > > Now someone from Site A calls site B, the bandwidth at Site A is unlimited > so no issue there. **** > > According to the Cisco Research I’ve done, a call requires 2 streams. **** > > Since Site B is using 240 of 256k of bandwidth on the 3 PSTN/SIP Trunk > calls, when a g729 calls comes inbound which requires 24k which causes > Site B location setting to be exceeded, will the call fail or succeed ??** > ** > > **** > > IMO, the call will fail.**** > > **** > > Thanks, **** > > Stephen Manuel**** > > **** > > **** > > **** > > > _______________________________________________ > 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**** > > ** ** >
_______________________________________________ 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
