AMERITECH AM8a - MF(R1) Frequencies

AM8a Instruction Manual (18-0037) Analysis Parameters
0037-S04.L_32 February 10, 2000
4-7
4.9.4 MF(R1) Frequencies: There are 15 frequency combinations that represent the possible
MF (Multi-Frequency) tones that are used between Central Offices and some PBXs.
For the AM8a to analyze digits as MF, a KP digit must immediately precede the first
dialed digit.
NOTE: MF(R1) digits will not be seen if DIALTONE is used as a Start Signal.
The analyzing of digits as MF will cease with the reception of an ST, ST3P, STP, or
ST2P digit. Refer to the table on the next page.
NOTE: The KP digit ON-time is twice the programmed value.
Example: MF digit 5 is made up of two frequencies: Low Band 900 Hz and High
Band 1300 Hz.
1
2
3
4
5
6
7
8
9
0
* (KP)
# (ST)
A (ST3P)
B (STP)
C (ST2P)
DIGIT LO BAND
700
700
900
700
900
1100
700
900
1100
1300
1100
1500
700
900
1300
HIGH BAND
900
1100
1100
1300
1300
1300
1500
1500
1500
1500
1700
1700
1700
1700
1700
MF FREQUENCIES