Black Box LRA005A-R2 - Manual (Page 259)

ASYNC ROUTER AR-P, AR-5, AND SYNC ROUTER REFERENCE MANUAL
259
The Router’s modem speaker is on by default during call setup. You can control the modem speaker’s
volume using the dialup iface volume {on | low | medium | high} command. After invoking the dialup volume
command, use the config save command to save the modem speaker’s volume setting. Don’t use an
init_string to control the modem speaker’s volume.