Cisco Systems OL-19025-01 manual Select Call Statistics, Voice Quality Metrics

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