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To enable or disable the key lock while in idle state:
• To enable long press the # key, to disable press the
softkey and then press #.
Currently, mobile IP phones do not fully support Enhanced 911 (E911) operation. It is necessary
to keep the system administrator and the location database current when the phone is moved, if
emergency services are required.
Important Note for Headset Users
You can plug the optional headset into the jack on the OP27 handset and enable the auto-answer
feature through the OP27 local mode menu or the 3300 system option menu. For instructions on
enabling auto-answer, see Auto-Answer on page 20.
Tips for your Comfort and Safety
Don't cradle the handset!
Prolonged use of the handset can lead to neck, shoulder, or back discomfort, especially if you
cradle the handset between your ear and shoulder. If you use your phone a lot, you may find it
more comfortable to use a headset. See Auto-Answer on page 20 for instructions on how to
enable or disable headset auto-answer.
Protect your hearing
Your phone has a control for adjusting the volume of the handset receiver or headset. Because
continuous exposure to loud sounds can contribute to hearing loss, keep the volume at a
moderate level.
About Feature Access Codes
Use of some features requires you to dial access codes. The codes are flexible and may differ
from those used in this guide. Ask your System Administrator for a list of codes you should use.
For Users on Resilient 3300 ICP Systems
If during a call, you hear two beeps repeated every 20 seconds, it means that your phone is
switching to a secondary 3300 ICP system. The call continues, but the keys and features on your
phone stop working. The keys and most features begin working again after you hang up. Normal
operation resumes when your phone switches over to the standby or resilient system. If your
phone is idle and switched to the secondary system, you’ll see an asterisk on the display. The
asterisk remains until the OpenPhone 27 returns its connection to the primary 3300 ICP.