How do I get manual for Vtech Ds6511-2 handset connect to cell cordless phone

Call forwarding is an add-on feature provided by your telephone company for a fee. Contact the phone company. The V-Tech DS6521-2 has the option of transferring a call between handsets, not to a cell phone. This uses the intercom feature to call another handset. See page 18 of the manual for more information.

The manual for the phone is available on the product page: https://www.vtechphones.com/store/pd/4158/DS6251-2-2-Line-2-Handset-Cordless-Phone-with-Answering-System-Smart-Call-Blocker . Expand the Support and Manuals section. The link to the user guide is currently: https://cdn-web.vtp-media.com/products/DS/DS6251/DS6251-X_WEBCIB_V4_20200623.pdf .

I hope this helps.

Cindy Wells

https://cdn-media.vtechphones.com/products/DS/DS6511/DS6511_WEBCIB_V10_20141224.pdf

Vtech CS6859 Manuals

Place the handset on the base. See "Add and register a handset" on page 23 of the manual: Owners Manual User Guide for Vtech 2 handset cordless phone system caller...

Enter the model of your VTech phone into the search box at http://www.vtechphones.com/support/general/manuals to download a copy of the manual.

Enter the model of your VTech 5.8GHz phone into the search box at http://www.vtechphones.com/support/general/manuals to download a copy of the manual.

You may download the manual here.

The VTech CS6229-2 - cordless phone has a two handset systems provide the convenience of operating two handsets using only one phone jack and one base station. The second handset simply needs an electrical outlet to plug into. These systems also allow you to transfer calls, conference an outside call or use the intercom feature between handsets.
Here's an online instruction manual for your guide: http://www.manualowl.com/m/Vtech/CS6229-2/Manual/196794

http://www.vtechphones.com/vtechui/support/manual.cfm?manualID=21896

http://www.vtechcanada.com/manuals/5870ciben.pdf
from the troubleshooting section of the manual

• Unplug the base unit’s electrical power and remove the battery from the handset. Wait for 15 seconds then plug in the battery place the handset in the base unit and plug in the power. Allow up to one minute for the cordless handset and base to synchronize

not a guarantee, something to try