Cisco 521SG - Unified IP Phone VoIP Administration Manual page 221

Cisco SPA IP Phone Field Reference
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Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
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).
A
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