You weren't specific to the issue, so here's a link I found relating to Technical issues for your phone. http://www.binatoneonline.com/faq_dect.aspx
If this doesn't help, you do have the option of sending an email to: contactus@binatonetelecom.com.hk
They are located in the UK, so calling probably isn't an option. They do have and offer the option to download the manual on their site: http://www.binatoneonline.com/manual.aspx.
But, it doesn't seem to be working.
I hope this is useful.
Sheila
February 2008