Cisco 7925G Administration Guide

DescriptionField
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 Voice
Quality Monitoring, on page 221.
The MOS LQK score can vary based on the type of codec that the
Cisco Unified IP Phone uses.
Note
MOS LQK
Average MOS LQK score observed for the entire voice stream.Avg MOS LQK
Lowest MOS LQK score observed from start of the voice stream.Min MOS LQK
Baseline or highest MOS LQK score observed from start of the voice
stream.
These codecs provide the following maximum MOS LQK score under
normal conditions with no frame loss:
•
G.711 gives 4.5
•
G.729 A /AB gives 3.7
Max MOS LQK
Version of the Cisco proprietary algorithm used to calculate MOS LQK
scores.
MOS LQK Version
Total number of concealment frames divided by total number of speech
frames received from start of the voice stream.
CumConcealRatio
Ratio of concealment frames to speech frames in preceding 3-second
interval of active speech. If using voice activity detection (VAD), a longer
interval might be required to accumulate 3 seconds of active speech.
IntConcealRatio
Highest interval concealment ratio from start of the voice stream.MaxConcealRatio
Number of seconds that have concealment events (lost frames) from the
start of the voice stream (includes severely concealed seconds).
Conceal Secs
Number of seconds that have more than 5 percent concealment events (lost
frames) from the start of the voice stream.
SevConcealSecs
Information about outbound and inbound previous and current frames.DSCP
Firmware Versions
You can verify the firmware versions that are used on the Cisco Unified Wireless IP Phone by viewing the
Firmware Info screen. The firmware version name is in this format:
Product_Name-Model-Protocol.Version Number.Filetype
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Administration Guide
193
Security, Device, Model, Status, and Call Statistics Information
Firmware Versions

Cisco 7925G Specifications

General

Keypad number of keys	12
Display diagonal	2 \
Display resolution	176 x 220 pixels
Call waiting	Yes
Lines quantity	6 lines
Voice codecs	G.711a, G.722, G.729a, iLBC
Security algorithms	128-bit WEP, SSL/TLS, WPA
Supported network protocols	DHCP, TFTP, DNS, SCCP, SRST
Input voltage	100 - 240 V
Dimensions (WxDxH)	52 x 20 x 127 mm
Minimum system requirements	Cisco Unified Communications Manager 4.1, 4.2, 4.3, 5.1, 6.0, 6.1, 7.0 + Cisco Unified Communications Manager Express 4.3 +
Input frequency	50/60 Hz
Storage temperature (T-T)	-30 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Product type	IP Phone
Product color	Gray
Safety	UL 60950, CSA 22.2 No.60950, EN 60950, IEC 60950, AS/NZS 60950, IEC 60529 (IP 54)
Certification	47 CFR 15 B ICES-003 B EN 55022 B AS/NZS CISPR 22 B CISPR 22 B VCCI B EN 61000-3-2 EN 61000-3-3 KN 22 EN 55024 EN 50082-1 EN 61000-6-1 EN 300386 EN 60601-1-2 KN
Compliance industry standards	IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.1X, IEEE 802.11e

Weight and Dimensions

Weight	138 g