CX86500 SCXV.xx Modem Data Sheet
2.13
2.14
Worldwide Country Support
Internal modem firmware supports 63 country profiles (see Table 1-2). These country
profiles include the following country-dependent parameters:
• Dial tone detection levels and frequency ranges.
• DTMF dialing parameters: Transmit output level, DTMF signal duration, and DTMF
interdigit interval.
• Pulse dialing parameters: Make/break times, set/clear times, and dial codes are
programmable.
• Ring detection frequency range.
• Type I and Type II Caller ID detection are supported for many countries. Contact
your local Conexant sales office for additional country support.
• Blind dialing enabled/disable.
• Carrier transmit level. The maximum, minimum, and default values can be defined to
match specific country and DAA requirements.
• Calling tone is generated in accordance with V.25. Calling tone may be toggled
(enabled/disabled) by inclusion of a “^” character in a dial string. It may also be
disabled.
• Frequency and cadence of tones for busy, ringback, congested, warble, dial tone 1,
and dial tone 2.
• Answer tone detection period.
• Blacklist parameters. The modem can operate in accordance with requirements of
individual countries to prevent misuse of the network by limiting repeated calls to
the same number when previous call attempts have failed. Call failure can be
detected for reasons such as no dial tone, number busy, no answer, no ringback
detected, voice (rather than modem) detected, and key abort (dial attempt aborted by
user). Actions resulting from such failures can include specification of minimum
inter-call delay, extended delay between calls, and maximum numbers of retries
before the number is permanently forbidden ("blacklisted").
The country profiles may be altered or customized by modifying the country-dependent
parameters. Additional profiles may also be included. Additional and modified country
profiles are supported by internal SRAM.
Please contact an FAE at the local Conexant sales office for additional and modified
country profile support.
Diagnostics
Diagnostics are performed in response to test commands.
Analog Loopback (&T1 Command). Data from the local DTE is sent to the modem,
which loops the data back to the local DTE.
DMTF Generation (%TT0 Command). Continuous DTMF tones are generated by the
DSP and output through the DAA.
Tone Generation (%TT3 Command). Continuous tones are generated by the DSP and
output through the DAA.
102287F
Conexant
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