Telephone Signalling Transceiver / Least Cost Router
CMX860
Receive V.23 FSK Mode
1200 baud
Notes
Min.
Typ.
Max.
Units
Acceptable baud rate
Mark (logical 1) frequency
Space (logical 0) frequency
1188
1280
2080
1200
1300
2100
1212
1320
2120
Baud
Hz
Hz
75 baud
Acceptable baud rate
Mark (logical 1) frequency
Space (logical 0) frequency
74
382
442
75
390
450
76
398
458
Baud
Hz
Hz
Receive Bell 202 FSK Mode
1200 baud
Notes
Min.
Typ.
Max.
Units
Acceptable baud rate
Mark (logical 1) frequency
Space (logical 0) frequency
1188
1180
2180
1200
1200
2200
1212
1220
2220
Baud
Hz
Hz
150 baud
Acceptable baud rate
Mark (logical 1) frequency
Space (logical 0) frequency
148
377
477
150
387
487
152
397
497
Baud
Hz
Hz
Rx Modem Signal
Signal level
Signal to Noise Ratio (noise flat 300-3400Hz)
Notes
10
Min.
-45.0
20.0
Typ.
-
-
Max.
-9.0
-
Units
dBm
dB
Rx Modem Continuous 1s and 1010.. Pattern
Notes
Min.
Typ.
Max.
Units
Detectors
Turn on time
bit-
times
bit-
32
12
-
-
40
20
Turn off time
times
Rx Modem Energy Detector
Detect threshold (‘Off’ to ‘On)
Undetect threshold (‘On’ to ‘Off’)
Hysteresis
Notes
10,11
10,11
10,11
Min.
-
-48.0
2.0
Typ.
Max.
-43.0
-
-
Units
dBm
dBm
dB
-
-
-
Detect (‘Off’ to ‘On’) response time
1200 baud FSK mode
150 and 75 baud FSK modes
10,11
10,11
8.0
16.0
-
-
30.0
60.0
ms
ms
Undetect (‘On’ to ‘Off’) response time
1200 baud FSK mode
150 and 75 baud FSK modes
10,11
10,11
10.0
20.0
-
-
40.0
80.0
ms
ms
Rx Answer Tone Detectors
Detect threshold (‘Off’ to ‘On)
Undetect threshold (‘On’ to ‘Off’)
Hysteresis
Detect (‘Off’ to ‘On’) response time
Undetect (‘On’ to ‘Off’) response time
Notes
10,8
10,8
10,8
10,8
10,8
Min.
-
-48.0
2.0
30.0
7.0
Typ.
-
-
Max.
-43.0
-
Units
dBm
dBm
dB
ms
ms
-
-
33.0
18.0
45.0
25.0
2100Hz detector
‘Will detect’ frequency
‘Will not detect’ frequency
2050
-
-
-
2160
2000
Hz
Hz
2225Hz detector
‘Will detect’ frequency
‘Will not detect’ frequency
2160
2335
-
-
2285
-
Hz
Hz
ã 2002 Consumer Microcircuits Limited
40
D/860/5
CMLMICRO [ CML MICROCIRCUITS ]
