Specifications

Si2457/Si2434/Si2415
14 Rev. 0.91
Output Level
Permissive—Switched network
–9 dBm maximum
Receive Carrier
ITU-T V.90
1
ITU-T V.34
2
ITU-T V.32bis
ITU-T V.32
ITU-T V.29
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 ±7 Hz
1800 Hz ±7 Hz
1700 Hz ±7 Hz
2400 Hz ±7 Hz
1200 Hz ±7 Hz
Mark (980 Hz ±12 Hz) Space (1180 Hz ±12 Hz)
Mark (1650Hz ±12Hz) Space (1850Hz ±12Hz)
Mark (2225Hz ±12Hz) Space (2025Hz ±12Hz)
Mark (1270Hz ±12Hz) Space (1070Hz ±12Hz)
Carrier Detect (level for ITU-T V.22bis,
V.22, V.21, 212, 103) in Switched Network
Acquisition (–43 dBm)
Release (–48 dBm)
Hysteresis 2 dBm minimum
Note: ITU-T V.90
1
, V.34
2
, V.32/V.32bis are echo canceling protocols that use signal quality as criteria for
maintaining connection. They also provide for self-training detection to force disconnect.
DTE Interface EIA/TIA-232-E (ITU-T V.24/V.28/ISO 2110)
Line Equalization Automatic Adaptive
Connection Options Loss of Carrier in ITU-T V.22bis and lower
Phone Types 500 (rotary dial), 2500 (DTMF dial)
Dialing Pulse and Tone
DTMF Output Level Per Part 68
Pulse Dial Ratio Make/Break: 39/61%
Ring Cadence On 2 seconds; Off 4 seconds
Table 7. Protocol Characteristics (Continued)
Item Specification
Notes:
1. Supported on Si2457 only.
2. Supported on Si2457 and Si2434 only.