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Troubleshooting
Duplex mismatch
A duplex mismatch anywhere on the WLAN can cause the WLAN IP Telephony Manager 2245 to
operate improperly. Double-check WLAN connections and interfaces to ensure that they are all
configured as full-duplex.
Feature limitations
The following limitations exist for the WLAN Handsets 2210/2211:
• The WLAN Handsets 2210/2211 do not have handsfree capability. Therefore, any feature
which requires handsfree is not supported or only partially supported. For example, when
there is an incoming call to an IP Phone 2004 set that is idle, but offhook, the set buzzes the
handsfree speaker. This feature is not supported on WLAN Handsets 2210/2211.
• The WLAN Handsets 2210/2211 do not support all of the buttons present on an IP Phone
2004. The following keys are not available:
— Expand to PC key
— Navigation (Left, Right, Up, Down) Keys
—Headset Key
— Handsfree Key
—Services
Any operation that requires those keys is not supported.
• Any feature that requires scroll buttons is not supported. For example, Feature * 900 is not
supported on the WLAN Handsets 2210/2211. The use of Call Logs and set-based
administration is also limited due to the lack of up and down scroll buttons (for example, you
cannot erase old logs from the Call Log).
• The WLAN handsets do not have a signal strength indicator.
• The WLAN handsets do not support the Net6 feature.
• Feature F*6 affects the display, but does not change the ring tone.
• Feature F*7 does not affect the LCD display.
• The WLAN handsets can access SBA, but they cannot navigate the menus.
• The set display is 4 lines by 19 characters. Therefore, some lines may be truncated or
compressed by a special compression mechanism. Also, the softkey labels are four characters
wide instead of seven characters as on an IP Phone 2004.
• The WLAN IP Telephony Manager 2245 can block calls due to bandwidth constraints on an
AP without notifying the BCM. The caller hears ringback, and the call-forward-no answer
treatment will be applied (for example, go to voicemail).
• If the call originates from a wireless handset that is on a bandwidth-restricted AP, the caller
hears a warning tone (three “chirps”) and the call is disconnected.