180 Proactive Voice Quality Management• UNISTIM/RUDP statisticsView RUDP statistics for IP Phones, such as number of messages sentor received, retries, resets, and uptime.• Real time Transport Protocol statisticsWhile a call is in progress, view RTP/RTCP QoS metrics, such aspacket loss and jitter.• DHCPView DHCP settings, such as IP address; and S1, S2, and S4 addressesfor each IP Phone.For detailed information about network diagnostic utilities, see IP PhonesFundamentals (NN43001-368).SNMP interfaceSimple Network Management Protocol (SNMP) interfaces with thetraffic-reporting system so that Telephony Manager (TM), or any third-partysystem, can have a simple, standards-based interface into the system trafficreports.For details about the SNMP interface, see Communication Server 1000Fault Management – SNMP (NN43001-719).Heterogeneous environmentsIn a heterogeneous environment, with a mixture of Nortel equipment andthird-party equipment, voice-quality monitoring, detection, and alarmingare performed only on IP endpoints that have voice-quality monitoringcapabilities.For information about IP endpoints and their voice-quality capabilities in thesystem, see Table 47 "IP endpoint and voice-quality capabilities" (page 180).Table 47IP endpoint and voice-quality capabilitiesEndpoint type Voice-quality monitoring operationPhase 0 and Phase I IP Phones Detect jitter, packet loss, and latency (when the far end isRTCP-compliant) threshold violations.Polling detects threshold violations. .Phase 2 IP Phones without PVQMpackageDetect jitter, packet loss, and latency (when the far end isRTCP-compliant) threshold violations.The IP Phone asynchronously detects threshold violations.Nortel Communication Server 1000Communication Server 1000E MaintenanceNN43041-700 01.02 StandardRelease 5.0 20 June 2007Copyright © 2007, Nortel Networks.
