Here's the test environment setup. Location A's PBX is connected to the FXO ports of 2600 series router. Location A is connected to Location B through 64 Kbps. Location B's PBX is also connected to a 2600 series router. Trying to understand how QoS works, I'm using g.729 r8 codec and have configured two dial-peers on either side and connected two analog phones. What parameters should I use with "ip rsvp bandwidth command"? The serial interface is enabled for fair-queuing. I tried "ip rsvp bandwidth 48 16" command. When I place a call, the routers display that a reservation event 1 occurs. But there is jitter during the call when I am pinging the router B's interface with large packets 1500. The jitter gets less when I stop the pings. When I change to "ip rsvp bandwidth 48 32", the quality gets better but there is no reservation event on the router. My question is why? Also there should be no jitter, the whole point of QoS is that if the resources are not available to satisfy the QoS profile parameters, then don't complete the call. I'm trying to get to the bottom of this. Anyhelp would be appreciated. Thanks in advance.
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