My bt 2200 freestyle is stuck on voicemail and

SOURCE: bt freestyle 210

I have found a free link to the user guide for you on the BT site, it is a very comprehensive guide and there is a BT helpline number if you are still having problems
http://www.shop.bt.com/content/uni2/documentation/4j8p/028609.pdf

SOURCE: BT Freestyle 2200 do dial tone

I have this model of handset but as a triple. I get three beeps from the handsets if the batteries are low or flat.
Are your phones getting charged?

However,

Try putting the base station into a different phone line/ socket if you have one.

if not - Try putting a corded phone on your phone line. Maybe there is something faulty with the socket, maybe there is no dial tone due to faulty wires?

SOURCE: trying to change number of rings before voicemail

By default individual coverage is set to 45 seconds. Ask your phone vendor to reduce it.

SOURCE: BT freestyle 2200 cordless phone

try this link
http://btsupport.custhelp.com/cgi-bin/btsupport.cfg/php/enduser/fattach_adp.php?p_sid=0&p_tbl=9&p_id=11816&p_faqid=11816&p_created=1219079325

SOURCE: My BT Verve 450 digital phone set won't ring out /incoming call

My GE cordless handset won't ring when it's on the base charging but it will when I take it off. I've taken off the battery and disconnect the phone from the wall to try to reset it, but it still doesn't ring.