Specifications

Si2457/34/15/04
Rev. 1.3 15
Data Format
Bit asynchronous
Selectable 8, 9, 10, or 11 bits per character, which includes
the start, stop, and parity bits
Compatibility ITU-T V.90
1
, V.34
2
, V.32bis, V.32, V.23, V.22bis, V.22, V.21,
Bell 212A, and Bell 103
Operating Mode
Switched network
Two-wire full duplex
Data Modulation
28 to 56 kbps
1
2.4 to 33.6 kbps
2
14.4 kbps
3
12.0 kbps
3
9600 bps
3
9600 bps
3
9600 bps
3
7200 bps
3
4800 bps
3
2400 bps
1200 bps
300 bps
V.90 as specified by ITU-T
V.34 as specified by ITU-T
128-level TCM/2400 Baud ±0.01%
64-level TCM/2400 Baud ±0.01%
32-level TCM/2400 Baud ±0.01%
16-level QAM/2400 Baud ±0.01%
V.29 QAM as specified by ITU-T
16-level TCM/2400 Baud ±0.01%
4-level QAM/2400 Baud ±0.01%
16-level QAM/600 Baud ±0.01%
4-level PSK/600 Baud ±0.01%
FSK 300 Baud ±0.01%
Answer Tone
ITU-T V.32bis, V.32, V.22bis, V.22, and V.21
modes
Bell 212A and 103 modes
2100 Hz ±3 Hz
2225 Hz ±3 Hz
Transmit Carrier
V.90
1
V.34
2
ITU-T V.32bis
3
ITU-T V.32
3
ITU-T V.29
3
ITU-T V.22, V.22bis/Bell 212A
Originate mode
Answer mode
ITU-T V.21
Originate mode
Answer mode
Bell 103
Originate mode
Answer mode
As specified by ITU-T
As specified by ITU-T
1800 Hz ±0.01%
1800 Hz ±0.01%
1700 Hz±1 Hz
1200 Hz ±0.5 Hz
2400 Hz ±1 Hz
Mark (980 Hz ±12 Hz) Space (1180 Hz ±12 Hz)
Mark (1650Hz ±12Hz) Space (1850Hz ±12Hz)
Mark (1270Hz ±12Hz) Space (1070Hz ±12Hz)
Mark (2225Hz ±12Hz) Space (2025Hz ±12Hz)
Output Level
Permissive—Switched network
–9 dBm maximum
Table 7. Protocol Characteristics (Continued)
Item Specification
Notes:
1. Supported on Si2457 only.
2. Supported on Si2457 and Si2434 only.
3. Supported on Si2457, Si2434, and Si2415 only.