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Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 7.1 (SCCP)
OL-19025-01
Chapter 7 Viewing Model Information, Status, and Statistics on the Cisco Unified IP Phone
Status Menu
To display the Call Statistics screen for information about the latest voice stream, follow these steps:
Procedure
Step 1 Press the Applications button.
Step 2 Select Admin Settings.
Step 3 Select Status.
Step 4 Select Call Statistics.
The Call Statistics screen displays these items:
Ta ble 7-4 Call Statistics Items for the Cisco Unified Phone 6900 Series
Item Description
Rcvr Codec Type of voice stream received (RTP streaming audio from codec):
G
.729, G.711 u-law, G.711 A-law.
Sender Codec Type of voice stream transmitted (R
TP streaming audio from
codec): G.729, G.711 u-law, G.711 A-law.
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
o
pened.
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 rece
iving voice stream was
opened.
Rcvr Discarded Number of RTP packets in the receiving voic
e 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