Putting a call on mute, For spp-71 only), Press mute – Sony SPP-71 User Manual
Page 13: Using touch-tone sen^ices, For pulse dialing systems only), 1 dial the service number, 2 when connected to the service, press tone(*), 3 press the dialing keys as required, Using "call waiting" service, Paging (for spp-73 only)

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