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Cisco Unified IP Phone 7965G and 7945G Administration Guide for Cisco Unified Communications Manager 6.1(3)
OL-17755-01
Chapter 7 Viewing Model Information, Status, and Statistics on the Cisco Unified IP Phone
Status Menu
Step 2 Select Status.
Step 3 Select Call Statistics.
The Call Statistics screen displays these items:
Ta b l e 7-6 Call Statistics Items
Item Description
Rcvr Codec Type of voice stream received (RTP streaming audio from codec): G.729,
G.728/iLBC, G.711 u-law, G.711 A-law, or Lin16k.
Sender Codec Type of voice stream transmitted (RTP streaming audio from codec):
G.729, G.728/iLBC, G.711 u-law, G.711 A-law, or Lin16k.
Rcvr Size Size of voice packets, in milliseconds, in the receiving voice stream (RTP
streaming audio).
Sender Size Size of voice packets, in milliseconds, in the transmitting voice stream.
Rcvr Packets Number of RTP voice packets received since voice stream was opened.
Note This number is not necessarily identical to the number of RTP voice
packets received since the call began because the call might have
been placed on hold.
Sender Packets 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 Jitter 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 Jitter Maximum jitter observed since the receiving voice stream was opened.
Rcvr Discarded 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.
Rcvr Lost Packets 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 9-16.
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.
Min MOS LQK Lowest MOS LQK score observed from start of the voice stream.
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