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Enabling the R2 Protocol
November 2009 353
Inbound calls require generation of call progress tones. If a call has
been accepted, BSMI will generate a finite number of RING tone
cycles before entering the answered state. If a call has been rejected,
BSMI will generate the BUSY signal until the call is cleared by the
outbound side. Table 24 identifies the IISDN_CPGEN_MF_
PARAMS structure that contains the parameters required to define
a call progress signal for generation by a DSP resource.
Table 24. IISDN_CPGEN_MF_PARAMS
Name Description Units Range
freqTone1 Frequency of tone #1 Hz [0-4000]
powerTone1 Power of tone #1 0.5 dB, relative to
power0dBm
Output
freqTone2 Frequency of tone #2 Hz [0-4000]
powerTone2 Power of tone #2 0.5 dB, relative to
power0dBm
Output
numCadences Number of distinct
cadences to generate
(on/off pairs)
[1,2,3]
makeTime1 Duration of first ON
cadence
ms [1 - 8191]: tone plays
for this duration
0: no generation
>0: tone played
continuously
breakTime1 Duration of first OFF
cadence
ms [1 - 8191]: tone is off
for this duration
0: silence not
generated between ON
cadences
< 0: silence is played
continuously
makeTime2 See makeTime1; not used
if numCadences = 1
breakTime2 See breakTime1; not used
if numCadences = 1