Specifications

AN93
Rev. 0.8 121
Compliance Testing
Regulatory compliance testing requires the modem to
be configured in specific ways and controlled to perform
specific operations necessary to make required
measurements. Compliance testing commands and
configuration information are provided.
Some helpful commands for conducting compliance
testing on the Si2493/57/34/15/04 are listed in Table 88.
The modem register defaults configure the modem for
FCC operation.
Table 87. Test Coverage
Circuit or Function &T2 &T3 Functional Test
Si2493/57/34/15/04
chip
Yes Yes Yes
ISOcap™ Operation Yes Yes Yes
Si3018/10 Operation Yes Yes
Hookswitch Yes Yes
dc Termination Yes Yes
Bridge Yes Yes
AC Termination Yes Yes
Line Voltage Monitor Yes
Ringer Network Yes
Intrusion Detection Yes
Caller ID Yes
Overcurrent Detection Yes
Table 88. AT Commands for Compliance Testing
AT Command/Test Method Desired Response
ATH1 Continuous off-hook
ATH0 Return on-hook
AT&Hn (see command description for n) Set modulation
AT&T3 (requires load and loop current) Turn on carrier (originate)
Set S10 = 255 to keep the modem under test from hanging up after
the remote modem is unplugged. Connect with another modem
(Si24xx in answer mode), then unplug other modem.
Turn on carrier (answer)
AT&T4 Initiate transmit as originating modem
with automatic data generation
AT&T5 Initiate transmit as answering modem
with automatic data generation
ATX0 Blind dial (no dialtone)
AT*Y1D<digit> (example: AT*Y1D1 for DTMF1) Send continuous DTMF digit
ATM2 Speaker on continuously
ATM0 Turn off speaker