Appendix B: CPSW Reference Material
118
Key from 16-button keypad.
Timing: Variable. Typical is 150ms of tone, 50ms of silence.
Digits:
1 through 14, including A, B, C, D, *, and #.
Table 42: Quick Call One (Two-Plus-Two) Frequencies and Timing
Timing:
Variable.
Typical Timing:
First tone pair:
1250ms
Gap:
0ms
Second tone pair: 1000ms
Group call:
5000ms (if 1st and 2nd tone pairs are same)
Tone
A Series
B Series
Z Series
No.
Freq.
1
1. Frequencies are shown in hertz.
Code
Freq.
Code
Freq.
Code
0
358.9
CA
371.5
CB
346.7
CZ
1
398.1
DA
412.1
DB
384.6
DZ
2
441.6
EA
457.1
EB
426.6
EZ
3
489.8
FA
507.0
FB
473.2
FZ
4
543.3
GA
562.3
GB
524.8
GZ
5
602.6
HA
623.7
HB
582.1
HZ
6
668.3
JA
691.8
JB
645.7
JZ
7
741.3
KA
767.4
KB
716.1
KZ
8
822.2
LA
851.1
LB
794.3
LZ
9
912.0
MA
944.1
MB
881.0
MZ
A
1011.6
NA
1047.1
NB
977.2
NZ
B
1122.1
PA
1161.4
PB
1084.0
PZ