The Snom PA-1 is a combination Paging and Speaker Amplifier. This device will allow an IP phone system to integrate with speakers to broadcast audio to listeners. This device is often used to power warehouse speakers, or other announcement applications.

Spec Sheet - https://www.snomamericas.com/assets/79fc8307-734c-49fc-817f-4f721b2004c3/snom_pa1_datasheet_en_2-0-2.pdf
User Manual - https://att.vtp-media.com/products/PA/PA1/UM_PA1_en.pdf