Turning off the ringer of the handset, Ringer off selected – Sony SPP-ID971 Manuel d'utilisation

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Turning off the ringer of the handset, Ringer off selected | Sony SPP-ID971 Manuel d'utilisation | Page 25 / 88 Turning off the ringer of the handset, Ringer off selected | Sony SPP-ID971 Manuel d'utilisation | Page 25 / 88
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