Chapter 9 Troubleshooting the Cisco Wireless IP Phone 7920
General Troubleshooting Information
9-18
Cisco Wireless IP Phone 7920 Administration Guide for Cisco CallManager Release 4.0 and 4.1
OL-7104-01
Time on phone is incorrect
Sometimes the time or date on the phone is incorrect. The
Cisco Wireless IP Phone 7920 gets its time and date when it
registers with Cisco CallManager. Power cycle the phone to
reset the time or date.
The time shows in military time (24 hour) format.
Ring volume is too low
To see if the ring volume is set correctly on the phone, choose
Menu > Profiles > Ring Volume
. Scroll to the right for the
highest volume.
You can download loud ring tones from the Software Download
page on Cisco.com. See the
“Downloading Loud Ring Tones”
section on page 7-14
.
Phone does not ring
To see if the phone is set to ring, choose
Menu > Profiles >
Incoming Call Alert
, and check that it is set to
On
.
To see if a ring tone has been set for the phone, choose
Menu >
Phone Settings > Ring tones
. If none is set, add a ring tone for
the phone.
To see if the speaker is functioning properly, adjust the ring
volume settings to the highest level. Enable keypad tones or call
the phone to check the speaker.
One-way audio on phone
Check that the speaker is functioning properly. Adjust the
speaker volume setting and call the phone to check the speaker.
Check that ARP caching has been set on the AP. See
“Wireless
Network and Access Point Configuration” section on
page 2-19
.
Delays when roaming from one
location to another
If Cisco Catalyst 45xx series switches are being used as the
main Layer 3 switches in the network, ensure that the
supervisor blades are a minimum SUP2+ or later version. The
Cisco Wireless IP Phone 7920 (or any wireless client)
experiences roaming delays when an earlier version (SUP 1 or
SUP2) blade is used.
Table 9-1
Cisco Wireless IP Phone Troubleshooting (continued)
Summary
Explanation
Summary of Contents for 7920 - Unified Wireless IP Phone VoIP
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