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Spectralink 7520 and 7540 User Guide
14158600 Version 9.0
September, 2013
50
Ringing Tone
The ring tone is followed by a number indicating the chosen tone of the ringer.
You can distinguish between an internal and external call by the ring tone. The ring tone of an
internal call is followed by three short beeps (system dependent feature).
Volume
Adjusts ringing volume according to the noise level of the surrounding environment.
Firmware Version
Information about the firmware version provided for the system administrator.