(Marathon Discontinued) There are 4 different set up options for the AT&T Marathon (TL7610). Ask the Customer what type of phone are we connecting this to? Cordless phone - Set Up #1 Multi-line Non-Partner Phone - Set Up #2 I don’t have a phone - Set Up #3 Partner Phone - Set Up #4 Set Up# 1: Cordless phone set up (connecting to splitter) for use with Single line cordless phones - Put a jack splitter - which is included with unit - into the wall outlet. - Plug the Tell wall jack cord into the headset base and the other end into the splitter - Phone line will plug in from cordless phone to the splitter (there is 2 ports in the splitter) - Set to NO LIFTER MODE SET UP 2: Multi-line NON-Partner Office Phones For more information on connecting the Marathon to office phones, check out this article! Handset Jack: - Remove the Handset Receiver cord f (curly cord) from the phone and plug it into the headset base - Plug the Base Jack cord into the headset base and other end into handset jack o…