How do I set the time and day on a Bt synergy 3505 phone?

No actual idea, but check user manual, go to BT website and check there (esp FAQs). Do BT have a customer helpline?

www.ukcordless.co.uk/.../BT%20Synergy%206500%20User%20Guide.p.

See if the above guide tell you how.

Having changed the batteries on my bt synergy 5500 trio it now displays that it is in test mode. How can I activate my phone so that I can receive and make calls

is possble to use 8 bt 6500 hand phones via 2 base unit on the one bt line

Hi,

Go to this page please http://www.telephonesonline.co.uk/userguides/BT%20USER%20MANUALS/SYNERGY/SYNERGY%204500.pdf this is where you can get the manual for it. Just download the pdf file.

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Have you got it set on auto answer? Here is the manual see page 15
http://www2.bt.com/btPortal/application?origin=mb_product_atoz.jsp&pageid=mb_pns_catalogue&portletid=mb_pns_catalogue&wfevent=link.related.content&oSiteArea=mb.corp&oPJsp=mb_product_atoz.jsp&oPt=mb_pns_catalogue&oDocumentId=editorial/user_guide/synergy_4500_ug.xml&oOJsp=content.jsp&oPg=mb_pns_catalogue&oDocumentType=User+Guide&siteArea=mb.corp&PorS=products&contentitemid=editorial/user_guide/synergy_4500_ug.xml&contentType=User+Guide&event=bea.portal.framework.internal.portlet.event&com.bea.event.type=linkclick&oLName=link.searchresults&oLDesc=2637928916

If the handset displays 'Searching', 'Base' or 'Range out' on the screen, this indicates that the handset has lost its link with the base. The following procedure should be followed to help resolve the problem:

• Confirm that the power lead has not been inadvertently disconnected from the base.
• Ensure that the handset batteries are correctly installed and are fully charged.
• Ensure that the handset and base are within range of each other.
• Switch the mains power off, wait five seconds and then turn it on again. This will reset your product.
• Carry out a reset procedure on both the handset and the base to return the settings back to the factory default. Your user guide will guide you through the correct procedure.
• If none of the above remedies solve your problem, please contact the helpdesk.

http://bt.custhelp.com/cgi-bin/bt.cfg/php/enduser/cci/bt_adp.php?p_sid=KEyO-6Fj&cat_lvl1=1243&cat_lvl2=1899&cat_lvl3=1897&cat_lvl4=1918&p_cv=4.1918&p_cats=1243,1899,1897,1918&p_faqid=11935

this is the manual for synergy 3100

to set the time the instructions are on page 9 of the instruction manual in the getting started section.

in case you no longer have the manual....

1. press the tick/menu button twice.
2. press 0 and you hear 'to set the day and time press Star, to hear the day and time press Square.
3. press star. you hear 'please enter new day and time after the tone' enter the day (1=sun, 2=mon etc) enter the time using 24hr clock.
4. press the X/security button twice to exit.

hope this helps.

Hold down the forward skip button on the answer machine, it will say 3, if you have it set to 3 rings, just press the forward skip button again to the required number of rings, 10 being the max. Thats it job done.