Meridian Nortel 1 Option 11C Technical Reference Manual page 410

Page 410 of 544
Signaling levels
Table 130
MF frequency values
Digit
1
2
3
4
5
6
7
8
9
0
KP
ST
STP(ST')
ST2P(ST")
ST3P(ST")
553-3011-100 Standard 14.00
NTAG26 XMFR card
MF signaling uses pairs of frequencies to represent digits.
The following table lists the frequency values used for received signals.
January 2002
Backward direction
DOD-Tx, DID-Rx
700 Hz + 900 Hz
700 HZ + 1100 Hz
900 Hz + 1100 Hz
700 Hz + 1300 Hz
900 Hz + 1300 Hz
1100 Hz + 1300 Hz
700 Hz + 1500 Hz
900 Hz +1500 Hz
1100 Hz + 1500 Hz
1300 Hz + 1500 Hz
1100 Hz + 1700 Hz
1500 Hz + 1700 Hz
900 Hz + 1700 Hz
1300 Hz + 1700 Hz
700 Hz + 1700 Hz