This shows wiring with both the discontinued PD-1 paging adaptor, which connect TD/H Series handsets to external amplifiers. Instructions for the current PD-2 can be seen here: https://www.aiphone.com/wp-content/uploads/PD-2-Instr.pdf.
This shows wiring with both the discontinued PD-1 paging adaptor, which connect TD/H Series handsets to external amplifiers. Instructions for the current PD-2 can be seen here: https://www.aiphone.com/wp-content/uploads/PD-2-Instr.pdf.