Cisco Systems 6921 manual Select Status, Select Call Statistics, Voice Quality Metrics

Chapter

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, G.722 (only on 6945 phone).
Sender Codec	Type of voice stream transmitted (RTP streaming audio from codec): G.729, G.711
	u-law, G.711 A-law, G.722 (only on 6945 phone).
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

Cumulative Conceal Ratio

Total number of concealment frames divided by total number of speech frames received from start of the voice stream.

Cisco Unified IP Phone 6921, 6941, 6945, and 6961 Administration Guide for Cisco Unified Communications Manager 8.5 (SCCP and SIP)

OL-23769-01 7-9