Service manual

FO-4400U
FO-CS1
5 – 12
Notes:
1. Modulation legend: TCM: Trellis-Coded Modulation QAM: Quadrature Amplitude Modulation PCM: Pulse Coded Modulation
FSK: Frequency Shift Keying DPSK: Differential Phase Shift Keying
2. Adaptive; established during handshake:
Symbol Rate (Baud) V. 34 Low Carrier Frequency (Hz) V. 34 High Carrier Frequency (Hz)
2400 1600 1800
2800 1680 1867
3000 1800 2000
3200 1829 1920
3429 1959 1959
3. For both duplex and half-duplex modes.
4. Maximum data rate.
Configuration Modulation
Carrier Frequency Data Rate (bps) Symbol Rate Bits/Symbol- Bits/Symbol- Constellation
(Hz) ± 0.01 % ± 0.01 % (Symbols/Sec.) Data TCM Points
V.90 PCM PCM — 56000 R/V.34 rates T 8000 Dynamic ——
(Note 4)
V. 34 33600 TCM
3
TCM Note 2 33600 3429 only Note 2 Note 2 Note 2
V. 34 31200 TCM
3
TCM Note 2 31200 3200 min Note 2 Note 2 Note 2
V. 34 28800 TCM
3
TCM Note 2 28800 3000 min Note 2 Note 2 Note 2
V. 34 26400 TCM
3
TCM Note 2 26400 2800 min Note 2 Note 2 Note 2
V. 34 24000 TCM
3
TCM Note 2 24000 2800 min Note 2 Note 2 Note 2
V. 34 21600 TCM
3
TCM Note 2 21600 2400 min Note 2 Note 2 Note 2
V. 34 19200 TCM
3
TCM Note 2 19200 Note 2 Note 2 Note 2 Note 2
V. 34 16800 TCM
3
TCM Note 2 16800 Note 2 Note 2 Note 2 Note 2
V. 34 14400 TCM
3
TCM Note 2 14400 Note 2 Note 2 Note 2 Note 2
V. 34 12000 TCM
3
TCM Note 2 12000 Note 2 Note 2 Note 2 Note 2
V. 34 9600 TCM
3
TCM Note 2 9600 Note 2 Note 2 Note 2 Note 2
V. 34 7200 TCM
3
TCM Note 2 7200 Note 2 Note 2 Note 2 Note 2
V. 34 4800 TCM
3
TCM Note 2 4800 Note 2 Note 2 Note 2 Note 2
V. 34 2400 TCM
3
TCM Note 2 2400 2400 only Note 2 Note 2 Note 2
V. 32 bis 14400 TCM TCM 1800 14400 2400 6 1 128
V. 32 bis 12000 TCM TCM 1800 12000 2400 5 1 64
V. 32 bis 9600 TCM TCM 1800 9600 2400 4 1 32
V. 32 bis 7200 TCM TCM 1800 7200 2400 3 1 16
V. 32 bis 4800 QAM 1800 4800 2400 2 0 4
V. 32 9600 TCM TCM 1800 9600 2400 4 1 32
V. 32 9600 QAM 1800 9600 2400 4 0 16
V. 32 4800 QAM 1800 4800 2400 2 0 4
V. 22 bis 2400 QAM 1200/2400 2400 600 4 0 16
V. 22 bis 1200 DPSK 1200/2400 1200 600 2 0 4
V. 22 1200 DPSK 1200/2400 1200 600 2 0 4
V. 22 600 DPSK 1200/2400 600 600 1 0 4
V. 23 1200/75 FSK 1700/420 1200/75 1200 1 0 —
V. 21 FSK 1080/1750 Up to 300 300 1 0 —
Bell 208 4800 DPSK 1800 4800 1600 3 0 8
Bell 212A DPSK 1200/2400 1200 600 2 0 4
Bell 103 FSK 1170/2125 Up to 300 300 1 0 —
V. 17 14400 TCM/V.33 TCM 1800 14400 2400 6 1 128
V. 17 12000 TCM/V.33 TCM 1800 12000 2400 5 1 64
V. 17 9600 TCM TCM 1800 9600 2400 4 1 32
V. 17 7200 TCM TCM 1800 7200 2400 3 1 16
V. 29 9600 QAM 1700 9600 2400 4 0 16
V. 29 7200 QAM 1700 7200 2400 3 0 8
V. 29 4800 QAM 1700 4800 2400 2 0 4
V. 27 4800 DPSK 1800 4800 1600 3 0 8
V. 27 2400 DPSK 1800 2400 1200 2 0 4
V. 21 Channel 2 FSK 1750 300 300 1 0 —
3) Configurations, Signaling Rates, and Data Rates