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Cisco 7971G-GE User Manual

Page 20

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Chapter 7 Viewing Model Information, Status, and Statistics on the Cisco Unified IP Phone

Status Menu

7-20

Cisco Unified IP Phone 7970G/7971G-GE for Cisco Unified Communications Manager 6.0

OL-12232-01

TxCnt

Number of RTP voice packets transmitted since
voice stream was opened.

Note

This number is not necessarily identical to
the number of RTP voice packets transmitted
since the call began because the call might
have been placed on hold.

Avg Jtr

Estimated average RTP packet jitter (dynamic delay
that a packet encounters when going through the
network) observed since the receiving voice stream
was opened.

Max Jtr

Maximum jitter observed since the receiving voice
stream was opened.

RxDisc

Number of RTP packets in the receiving voice stream
that have been discarded (bad packets, too late, and
so on).

Note

The phone will discard payload type 19
comfort noise packets that are generated by
Cisco Gateways, which will increment this
counter.

RxLost

Missing RTP packets (lost in transit).

Voice Quality Metrics

MOS LQK

Score that is an objective estimate of the mean
opinion score (MOS) for listening quality (LQK)
that rates from 5 (excellent) to 1 (bad). This score is
based on audible concealment events due to frame
loss in the preceding 8-second interval of the voice
stream. For more information, see the

“Monitoring

the Voice Quality of Calls” section on page 9-24

.

Note

The MOS LQK score can vary based on the
type of codec that the Cisco Unified IP
Phone uses.

Avg MOS LQK

Average MOS LQK score observed for the entire
voice stream.

Table 7-6

Call Statistics Items (continued)

Item

Description