ds22-l100-041 Conexant Systems, Inc., ds22-l100-041 Datasheet - Page 18

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ds22-l100-041

Manufacturer Part Number
ds22-l100-041
Description
Cx84100-41/-23 Scxv.22bis Modem V.22bis Modem With Cx20493 Smartdaa? Line Side Device
Manufacturer
Conexant Systems, Inc.
Datasheet
2.2
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
2.2.6
2.2.7
2-2
Establishing Data Modem Connections
Dialing
Modem Handshaking Protocol
Call Progress Tone Detection
Answer Tone Detection
Ring Detection
Billing Protection
Connection Speeds
Pulse Dialing. Pulse dialing is supported in accordance with EIA/TIA-496-A.
Blind Dialing. The modem can blind dial in the absence of a dial tone if enabled by the
X0, X1, or X3 command.
If a tone is not detected within the time specified in the S7 register after the last digit is
dialed, the modem aborts the call attempt.
Ringback, equipment busy, congested tone, warble tone, and progress tones can be
detected in accordance with the applicable standard.
Answer tone can be detected over the frequency range of 2100 ± 40 Hz in ITU-T modes
and 2225 ± 40 Hz in Bell modes.
A ring signal can be detected from a TTL-compatible 15.3 Hz to 68 Hz square wave
input.
When the modem goes off-hook to answer an incoming call, both transmission and
reception of data are prevented for 2 seconds to allow transmission of the billing tone
signal.
Line connection can be selected using the +MS command. The +MS command selects
modulation, enables/disables automode, and selects minimum and maximum line speeds
(Table 2-1).
CX84100-41/-23 SCXV.22bis Modem Data Sheet
Conexant
102339C

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