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Issue Possible Cause & Solution
I cannot transfer a call.
• You are in a 3-party conference call.
→ When the 3-party conference call ends, try the operation again
(Page 52).
I cannot do a blind transfer.
• You are either in the middle of transferring a call or you are in a 3-party
conference call.
→ Either cancel the transfer or end the 3-party conference call, and
then try the operation again (Page 52).
I cannot establish a 3-party
conference call.
• You are in the middle of transferring a call.
→ Cancel the transfer, and then try the operation again (Page 52).
I cannot assign anything to a
flexible button.
• You are on a call or the screen lock is active.
→ When the call ends, try the operation again.
→ Unlock the screen lock, and then try the operation again.
• Some flexible buttons may already have phone functions assigned to
them through configuration file programming.
→ These buttons cannot be modified. For details, consult your
administrator.
Sound Quality
Issue
Possible Cause & Solution
The other party cannot hear
my voice.
• The unit is muted.
→ If the light on is flashing red, press to
turn off mute (Page 17).
• The microphone is blocked.
→ During a call, avoid blocking the microphone with your hands or
other objects.
124 Operating Instructions Document Version 2011-09
Troubleshooting