Question:  I would like the auxiliary input audio to the WBS-680 base station to remain internal to the base station (that is it is only routed to the WTR-680 beltpacks and the base station headset connector).  Currently the auxiliary audio is routed to the above mentioned destinations and is also routed to the wired PL channels A and B connectors as well.  Is there a modification to change the external audio routing of the auxiliary input audio?
Answer:  The modification document attached below  “disconnects” auxiliary input audio from being placed onto any wired intercom system connected to the unit. The auxiliary input audio is heard locally, within the base station and its’ beltpacks, but not sent to the wired interface. This modification does not affect auxiliary audio out, thus auxiliary out will contain I/C B audio,
which is composed of all locally generated audio (base and beltpacks) and all wired intercom audio.
The document will also work for the WBS-670 base station as it uses the same audio board as the WBS-680 base station.