Custom features on your phone line, Custom features on your phone line -18 – Siemens 1800C User Manual
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A S S E M B L Y A N D C O N N E C T I O N S
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Custom Features on Your Phone Line
If you have Voice Mail, Call Waiting, Call Waiting/Caller ID, RingMaster, an
answering service, an alarm system or other custom feature on one phone line,
it may create a problem with the operation of your fax machine. (See
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