CX86500-26 데이터 시트보기 (PDF) - Conexant Systems

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CX86500-26

V.92/V.34/V.32bis Modem in 28-Pin or 38-Pin TSSOP with CX20493 SmartDAA®

Conexant Systems 

CX86500 SCXV.xx Modem Data Sheet

2.3

2.3.1

2.3.2

2.3.3

2.3.4

2.3.5

2.3.6

Establishing Data Modem Connections

Dialing

DTMF Dialing. DTMF dialing using DTMF tone pairs is supported in accordance with

ITU-T Q.23.

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.

Modem Handshaking Protocol

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.

Call Progress Tone Detection

Ringback, equipment busy, congested tone, warble tone, and progress tones can be

detected in accordance with the applicable standard.

Answer Tone Detection

Answer tone can be detected over the frequency range of 2100 ± 40 Hz in ITU-T modes

and 2225 ± 40 Hz in Bell modes.

Ring Detection

A ring signal can be detected from a TTL-compatible 15.3 Hz to 68 Hz square wave

input.

Billing Protection

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.

2-2

Conexant

102287F

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