The connections from the WBS-680 wireless base station tothe MS-702 wired party-line main station are relatively easy.  You willneed two 3-pin XLR-F to 3-pin XLR-M microphone patch cables for the connectionsbetween the two units.   After connecting the patch cables the WBS-680 base stationfront panel needs a few adjustments to activate the wired intercom settings:·        Press the “Select” button for IC channels A andB to light up the green LED for each channel in “2-wire” mode·        To balance the wireless audio levels with thewired audio levels on A and B channels adjust the “input” and “output”screwdriver controls as required This should allow the wired party-line users to hear thewireless beltpack users when the wireless users press their A or B talkbuttons, the wireless users will hear the wired users depending on whichchannel they are listening to. 

Attached below is a document showing the wiring and WBS-680 base station front panel settings.