Handsfree parallel switching accessory for mounting in the comfort handsfree bus telephone intercom BFC 850-…
Circuit board for connection of an additional supply.
Required if more than 4 handsfree bus telephones BFC 850-… are called simultaneously or for each BFC 850-… which is required to receive a collective paging announcement.
A maximum of 8 handsfree bus telephones can ring at the same time. (Telephones 1–4 without ZPSF 850-…, telephones 5–8 with ZPSF 850-…)
An NG 602-… or NG 706-30/33-… is required in addition for supply purposes.
