Cisco Systems CP6921CK9 manual Select Call Statistics, Voice Quality Metrics

Models: CP6921CK9

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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:

 

Table 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 (RTP 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

 

 

 

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

 

 

 

 

 

 

 

Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 7.1 (SCCP)

 

OL-19025-01

7-9

 

 

 

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Cisco Systems CP6921CK9 manual Select Call Statistics, Voice Quality Metrics