Chapter 6 Viewing Model Information, Status, Statistics, and Security Information on the Cisco Unified IP Phone
Call Statistics Screen
Table
Item
TxCnt
Avg Jtr
Max Jtr
RxDisc
RxLost
Description
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.
Estimated average RTP packet jitter (dynamic delay that a packet encounters when going through the network) observed since the receiving voice stream was opened.
Maximum jitter observed since the receiving voice stream was opened.
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.
Missing RTP packets (lost in transit).
Voice Quality Metrics
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| MOS LQK | Score that is an objective estimate of the mean | |
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| opinion score (MOS) for listening quality (LQK) | |
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| that rates from 5 (excellent) to 1 (bad). This score is | |
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| based on audible concealment events due to frame | |
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| loss in the preceding | |
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| stream. For more information, see the “Monitoring | |
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| the Voice Quality of Calls” section on page | |
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| Note The MOS LQK score can vary based on the | |
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| type of codec that the Cisco Unified IP | |
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| Phone uses. | |
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| Avg MOS LQK | Average MOS LQK score observed for the entire | |
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| voice stream. | |
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| Cisco Unified IP Phone 7940G/7960G Administration Guide for Cisco Unified CallManager 4.2(3) | |||
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