If you mean the AT&T 993 two-line speakerphone, you can adjust the ringer volume for each line when the phone is not in use. To increase the ringer volume on the primary line (if set), press the Volume Up arrow. To decrease the ringer volume, press the down arrow. There are 8 different volume levels available for the ringer. The Volume Up/Down buttons are below the * and 0 keys.
To adjust the ringer volume on the secondary line, press that line button (between the Conference and Hold buttons) and then press the Volume Up or Down buttons as needed. (If you haven't programmed a primary line, press a Line button and adjust that line's ring volume before pressing the other Line button. Then adjust the volume for that Line.)
I hope this helps. These directions are shown on page 32 of the manual. AT&T currently has the manual here :
https://att.vtp-media.com/ecp/documents/product_Product/227/UserManual/5596/993_manual_i14.pdf . To find this manual or other AT&T phone manuals, start here:
https://telephones.att.com/product-support/manuals .
Cindy Wells
×