atcomsystems.ca/forum Forums TDM Business Telephone Systems Nortel Telephones & Systems Externall ring/page horns on 3x8

You can also go from headset port on the phone to the Algo but keep it at 15 feet tops from the phone....see the manual here: https://www.algosolutions.com/pdf/user_guides/1825_Duet_Plus_Installation_Guide_English.pdf

You could go from headset to Algo then mount Algo beside the sets jack & power receptacle on the wall then run a cable to each additional speaker (or daisy chain)....in this scenario you would set the jumper to turn off the Algo speaker since the remote speakers would be used.
Or mount the Algo just outside the office 15 feet tops from the headset jack to service that area then run additional speakers.