Specifications

7-13
Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 8.0
OL-21033-01
Chapter 7 Viewing Model Information, Status, and Statistics on the Cisco Unified IP Phone
Status Menu
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 Monitoring the Voice Quality of Calls, page 9-14.
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.
Table 7-6 Call Statistics Items (continued)
Item Description