BSS Soundweb London Telephone Hybrid PSTN Card

The Telephone Hybrid Card gives a card-based Soundweb London chassis a connection to a standard POTS, PSTN or analog PBX telephone network. It fits any of the four card slots on a BLU-800, BLU-805, BLU-806, BLU-320, BLU-325, BLU-326, BLU-160 or BLU-120, which is how a conferencing system gets a dial-in leg without a separate hybrid box in the rack.

The card also carries two analog inputs that accept microphone or line level signal, with phantom power configurable per channel and software-controlled analog gain in 6 dB steps from 0 dB to 48 dB. That reclaims the slot for two microphones as well as the phone line rather than spending it on the interface alone.