Hello Experts-I know "jack" about QoS other than it's short for quality of service. With that said, here's the sit:
We had a 2851 router acting as a WAN data link and voice gateway for our DC location until this AM. we cut over to a mpls 3rd party managed router which will now serve as the wan link and provide the layer 3 hopping and the 2851 will serve only as a voice gateway. Since cutover, we've seen while during backups over the WAN, some ip phones unregister and cannot obtain ip adds. The operations team seem is going to open a ticket w/vendor to troubleshoot QoS. My question: Is QoS even in play at that point (when devices are registering?) is thought it's only applied to active rtp voice streams (traffic of calls in progress). Please see config as to how we're doing QoS. As always, thanks.