Guide to common phone frequencies.

NORMAL DTMF
ŻŻŻŻŻŻŻŻŻŻŻ
1  697hrz / 1209hrz
2  697hrz / 1336hrz
3  697hrz / 1477hrz
4  770hrz / 1209hrz
5  770hrz / 1336hrz
6  770hrz / 1477hrz
7  852hrz / 1209hrz
8  852hrz / 1336hrz
9  852hrz / 1477hrz
*  941hrz / 1209hrz
0  941hrz / 1336hrz
#  941hrz / 1447hrz
A  697hrz / 1633hrz
B  770hrz / 1633hrz
C  852hrz / 1633hrz
D  941hrz / 1633hrz

Dialtone                350hrz / 400hrz
Busy Signal             480hrz / 620hrz         0.5 on / 0.5 off
Toll Congestion         480hrz / 620hrz         0.2 on / 0.3 off
Ringback (normal)       440hrz / 480hrz         2.0 on / 4.0 off
Ringback (PBX)          440hrz / 480hrz         1.5 on / 4.5 off
Reorder (local)         480hrz / 620hrz         3.0 on / 2.0 off
Hang Up Warning         1400hrz / 2060hrz       0.1 on / 0.1 off
Hang Up                 2450hrz / 2600hrz

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RED BOX
ŻŻŻŻŻŻŻ
1700hrz / 2200hrz
.5˘  66ms x 1   
.10˘ 66ms on / 66ms off / 66ms on
.25˘ 33ms on / 33ms off x 5

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GREEN BOX
ŻŻŻŻŻŻŻŻŻ
700hrz  / 1100hrz       Coin Collect
700hrz  / 1700hrz       Ringback
1100hrz / 1700hrz       Coin Return

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BLUE BOX
ŻŻŻŻŻŻŻŻ
2600hrz @ 90ms on/ 60ms off / 900ms on
3700hrz (out of band signal)
900hrz  / 1500hrz
KP1     697hrz  / 1633hrz
KP2     770hrz  / 1633hrz
ST      852hrz  / 1633hrz
KP2E    941hrz  / 1633hrz 

CCITT (International Telegraph and Telephone Consultative Committee)

C11 700hrz  / 1700hrz
C12 900hrz  / 1700hrz
KP1 1100hrz / 1700hrz
KP2 1300hrz / 1700hrz
ST  1500hrz / 1700hrz
EO  2100hrz

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TASI (Time Assignment Speech Interpolation)
ŻŻŻŻ
1850hrz

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ATB (All Trunks Busy)
ŻŻŻ
440hrz / 680hrz @ 120ppm