Need Vol control handle for Partner series 1 phones. Can u point me in the right direction. Thanks

I assume you mean Handset.
Try Refurbed Supplies

This sounds more like a job for Walker Handsets (www.Handset.com).

Try Walker w10 with a/c power supply ,the battery ones are a pia.

Ditto for the Clarity handsets.

Thank you all and have a good Thanksgiving