SI2493-D-FS Silicon Laboratories Inc, SI2493-D-FS Datasheet - Page 251

• Manufacturer Part Number: SI2493-D-FS
• Description: IC ISOMODEM SYSTEM-SIDE 16SOIC
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2493-D-FS

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

V.90 modems must be tested with a digital modem, such as the USR Courier I. If a digital modem isn’t used as
illustrated in Figure 47, the highest connection speed a V.90 modem will support is 33.6 kbps. A call can be placed
or received in either direction at the speed set in the modems. A test script must be written for a computer to control
the dialing, monitor the call progress, send a file, and compare the received and sent files. Figure 47 illustrates this
test configuration.
Table 151 compares the coverage of &T2, &T3, and full bidirectional functional testing.
Si24xx chip
ISOcap Operation
Si3018/10 Operation
Hookswitch
dc Termination
Bridge
AC Termination
Line Voltage Monitor
Ringer Network
Intrusion Detection
Caller ID
Overcurrent Detection
Circuit or Function
ILS 2000
Teltone
Figure 47. V.90 Modem Functional Test Connection
ISDN
Table 151. Test Coverage
Terminal
Adaptor
ISDN
ISDN
&T2
Yes
Yes
Rev. 1.3
Analog
Modem Under Test
ISDN Modem
&T3
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Computer
Test
Functional Test
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
AN93
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