Telstra Monitor 420 answering machine manual

Got hold of a Telstra Monitor 420 answering machine from a garage sale like we did?
It is pretty straightforward to operate, but I really wanted to increase the default number of rings before it answers.
Ingram Micro does the tech support for them on 1300 369 193 (in Australia) and they were good enough to send me a copy of the manual in PDF.
You can download it: Userguide_M420.

5 thoughts on “Telstra Monitor 420 answering machine manual

  1. I read the post that says you have the PDF for the Telstra Monitor 420 …….. any chance you might send it to me?

  2. Hi. I have a telstra Monitor 303 dual cassette but I need a User Manual.
    It’s pretty old but had little use.
    Any ideas?
    Harley Cremer

  3. Not sure Harley. Perhaps try Telstra?
    Looks like that model is from before the Internet was in common use. I can’t even find a picture of it.
    Good luck.

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