We use SIP for most of our call routing. Right now a typical call path for an off-net call would be two legs: 7945G phone to a Cisco 2811 ISR. Then from the 2811 to the PSTN carrier (XO Communications). I can get MOS scores for the calls leg between the phone and the ISR. What I currently lack visibility on is between the ISR and the SIP provider. I would like to know MOS scores, jitter, loss, latency for the SIP trunk to the carrier. I am using the classic 2811. I'll likely upgrade that in the next year as it's going end of life. Would there be any snmp oids or other means I could monitor the quality of the SIP conversations to the PSTN? If not with the current gear perhaps with a new router with CUBE technology? Thank you. I'm feeling like we have a blind spot.