User`s manual

usr/config$ phone
Phone ringing , ringback tone , busy tone , dial tone setting and notes
Usage:
phone [-ring [freq ][ringON ][ringOFF ][ringLevel]]
[-rbt [freqHi ][freqLo ][freqHiLev][freqLoLev]
[Tone1ON][Tone1OFF][Tone2ON ][Tone2OFF ]]
[-bt [freqHi ][freqLo ][freqHiLev][freqLoLev]
[Tone1ON][Tone1OFF][Tone2ON ][Tone2OFF ]]
[-dt [freqHi ][freqLo ][freqHiLev][freqLoLev]
[Tone1ON][Tone1OFF][Tone2ON ][Tone2OFF ]]
[-flash [freqLo ][freqHi ]]
phone [-print [ring]|[rbt]|[bt]|[dt]|[flash]]
-print Display phone ringing/tone configuration.
ring : ringing
rbt : ringback tone
bt : busy tone
dt : dial tone
flash: flash tone
-ring ringing configuration set.
-rbt ringback tone configuration set.
-bt busy tone configuration set.
-dt dial tone configuration set.
-flash flash configuration set.
Note:
ringing frequency : 15 ~ 100 (Unit : Hz)
ringing ring ON/OFF : 0 ~ 8000 (Unit : ms)
ringing level : 0 ~ 94 (Unit : V)
tone frequency : 0 ~ 65535 (Unit : Hz)
tone freqLevel : 0 ~ 65535 (Unit : mVrms)
tone Tone ON/OFF : 0 ~ 8000 (Unit : ms)
Example:
phone -print rbt
phone -ring 20 2000 4000 94
70