ASYNC ROUTER AR-P, AR-5, ANDSYNC ROUTER REFERENCE MANUAL
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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.