Cisco 521SG Administration Guide - Page 221

Cisco SPA IP Phone Field Reference Info Tab A Parameter Round Trip Delay End System Delay Packets Lost Packet Error Loss Rate Discard Rate Burst Duration Gap Duration Description Number of milliseconds for delay in the RTP-to-RTP interface round trip. Number of milliseconds for delay in the internal round trip within the reporting endpoint. Number of packets lost. Number of invalid packets received. The fraction of RTP data packets from the source lost since the beginning of reception. Defined in RFC-3611-RTP Control Protocol Extended Reports (RTCP XR). The fraction of RTP data packets from the source that have been discarded since the beginning of reception, due to late or early arrival, under-run or overflow at the receiving jitter buffer. Defined in RFC-3611-RTP Control Protocol Extended Reports (RTCP XR). The mean duration, expressed in milliseconds, of the burst periods that have occurred since the beginning of reception. Defined in RFC-3611-RTP Control Protocol Extended Reports (RTCP XR). The mean duration, expressed in milliseconds, of the gap periods that have occurred since the beginning of reception. Defined in RFC-3611-RTP Control Protocol Extended Reports (RTCP XR). Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 220