Binatone cordless phone twin Model 1120 with answer machine.

Question edited for clarity, full maker model (what it is)'.
Question moved from Cellphones.

The manual for the 1305 is a similar phone. Here is the details for resetting.

https://www.manualslib.com/manual/1714110/Binatone-Vesta-1305-Call-Blocker.html?page=27#manual

Don't get anything from the first link as it may be a malicious site

https://www.google.com/search?q=binatone+vesta+1215+manual

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For the 1700, this model does not have a speakerphone. You would need to buy a different phone. Large LCD display and big buttons for ease of use Caller display enabled Up to 300 m range 20 contact phone book GAP compatible
https://www.amazon.co.uk/Binatone-Veva-1700-Cordless-Phone-Black-x/dp/B005GNMRMK

with cordless phones the problem is that the hand sets have to be recognized by the base station ( paired) and unless you have the exact hand piece make and model this pairing and recognition will not happen
if you can get 2nd hand units for the 3325 base then the base will accept them ( any number of additions ) but if the hand piece is different it will not work
you you need extra hand pieces then it may be best to consider a new system where you can buy extra phones and chargers

• 1. In standby mode, press (intercom).
  • • Intercom is established immediately if there are only 2 registered handsets.
  • • If there are more than 2 registered handsets, the handset numbers which are available for intercom will be displayed.
• 2. Press the handset number you wish to call or press * to call all handsets.
• 3. Press (Talk) on a called handset to answer the internal call, where both internal callers can talk.
• 4. To end the intercom call, press (End/off) on either handset.

You may view/download the user guide at http://www.fixya.com/support/p6357379-binatone_lifestyle_1910_twin_cordless_ph/usermanual-CF19F74-pdf

when someone phones my house phone it tells them they cant leave a message dont no why its not letting them as it use to record messages can anyone tell me how to fix it maybe iv acidentually switcheds it of or something

Ask here, they have already found a lot of Binatone manuals. Send them a request.

you have to press the answer machine button (3rd on the left with an R on it) then the display should say 'msg play' so press the down button scroll to OGM REC. record ya message after the tone then press ok when done. then scroll down the menus again (press the answer machine button (3rd on the left with an R on it) then the display should say 'msg play' so press the down button) scroll to TAM ON, press ok and thats the answering machine.

You can download a manual from the Binatone website.