Toshiba Strata AirLink User Manual page 20

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Step 3: Verify the System/Handset IDs
Your System Administrator can program one or more system and handset IDs into
your handset to enable you to use your handset in one or more telephone systems. If
you need to use your wireless telephone in a system that you were not originally
programmed to use, you can ask your System Administrator to program the
appropriate IDs into your telephone.
Installation
Verify the System/Handset IDs
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