Reference Manual
Appendix B: Specifications
40-400-00045, Rev. B
Page 49
DTMF Signaling
Transmitter:
Maximum output level
Frequency tolerance
Dialing delay
Digit signal length
Interdigit time
Maximum twist
Receiver:
Response range (level)
Minimum response (time, all signals)
Must not respond (time)
Minimum digit separation
Maximum digit interruption (hit) time
Maximum twist (high tone to low tone)
Frequency tolerance
Confirmation tones:
Connection tone
Acknowledgement tone
Error tone
-9 dBm averaged over 3 seconds
± 1.5 % of nominal
70 ms after start signal
Programmable: 50 to 255 ms ± 5 ms
Same as digit signal length
3 dB
-5 to -30 dBm/frequency
≥
40 ms
≤
20 ms
40 ms
10 ms
6 dB
± (1.5% + 5) Hz
1 second burst of 941 Hz tone
One burst of DTMF A, duration set by register S11
Triple burst of DTMF D, on/off timing set by register S11
FSK Receiver
Frequencies: Logical 1
Logical 0
Baud Rate
Response Range
1200 ± 12 Hz
2200 ± 22 Hz
1200 ± 1% Baud
-12 to -32dBm (1)
-12 to 36dBm (0)
MECHANICAL SPECIFICATIONS
Dimensions
5.5”W x 1.5”H x 9.0”D (140 x 38 x 229 mm)
Headset port
Modular headset connector. Use with headset amplifiers with
UL/CSA certification and compatibility and volume control.
Minimum voltage: 1.85 V at 400 µ with 20 mA loop current.
ENVIRONMENTAL SPECIFICATIONS
Storage temperature
-20 to +60 degrees C
Operating temperature
0 to +50 degrees C
Humidity 95%
()
REGULATORY COMPLIANCE
Safety
United States
Canada
EMC
United States
Telecom
United States
Canada
FCC and Industry Canada REN
UL 1459
CSA C22.2 No. 225-M90
FCC Part 15, Class A
FCC Part 68
Certification Number: AHHUSA-65423-MA-E
Industry Canada CS-03
Registration Number: 344 4419 A
0.3A / 0.5B
Содержание T-311
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