Spectralink 7502 Handset User Guide
Spectralink 7502 Handset User Guide.docx
April 2023 85
After successful
subscription the handset
displays the error
message: DECT System
not supported, handset not
subscribed.
Check if system is running
firmware PCS Q2-18 or newer.
“Login (Subscription)” on
page 73
Error when updating
firmware.
Check if you are trying to install
older firmware than PCS Q2-18.
Firmware must be PCS Q2-18 or
newer
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