Panasonic KX-TCD220SLT Service Manual page 39

Cross Reference:
(*16) Changing SMS Message Centre Numbers (P.32)
(*17) Erasing Saved Messages (P.30)
(*18) Erasing Received Messages (P.31)
(*19) Turning SMS On/Off (P.32)
Cross Reference:
(*20) Erasing All Messages (P.34)
(*21) Turning remote operation on/off (P.36)
(*22) Turning on the answering system remotely (P.36)
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KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT