Cisco 7925G Administration Guide

Solution
Use the following list to identify possible causes for the problem:
•
Check the access point to see if the transmit power setting matches the transmit power setting on the
phone. One-way audio is common when the access point power setting is greater than that of the phone.
The phone firmware supports dynamic transmit power control (DTPC). The phone uses the transmit
power that the access point advertises upon association.
With DTPC, if Client Transmit Power is set in the access point, the phone automatically
uses the same client power setting. If the access point is set for the maximum setting
(Max), the access point uses the Transmit Power setting on the phone.
Note
•
Check that the access point is enabled for ARP caching. When the phone is in power save mode or
scanning, the access point can respond to the wireless IP phone only when ARP caching is enabled.
•
Check your gateway and IP routing for voice problems.
•
Check if a firewall or NAT is in the path of the RTP packets. If so, you can use Cisco IOS and PIXNAT
to modify the connections so that two-way audio is possible.
•
Check that the Data Rate setting for the phone and the access point are the same. These settings should
match or the phone should be set for Auto.
•
Check the phone hardware to be sure the speaker is functioning properly.
•
Check the volume settings in the Phone Settings menu.
•
Check that the speaker is functioning properly. Adjust the speaker volume setting and call the phone to
check the speaker.
Related Topics
Site Survey Verification, on page 44
Ring Volume is Too Low
Problem
User complains that the ringer on the phone is not loud enough.
Solution
To see if the ring volume is set correctly on the phone, choose Settings > Phone Settings > Sound Settings
> Volumes. Scroll up for the highest volume.
You can also press the Volume button on the side of the phone and the volume setting appears on the phone
screen.
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Administration Guide
218
Troubleshooting
Ring Volume is Too Low

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