Filter
Top Products
Polarity
Reversal
First
Ring
CAS
(DTAS)
DTMF/
FSK
Polarity
Reversal
CAS
(DTAS)
FSK
CAS
(DTAS)
Wait For
ACK
FSK
First
Ring
FSK
OSI FSK
a) Bellcore/ETSI Onhook Post-Ring FSK
d) Bellcore Onhook FSK w/o Ring
f) Bellcore/ETSI Offhook FSK
c) ETSI OnhookPre-Ring FSK/DTMF
e) ETSI Onhook FSK w/o Ring
DTMF
b) ETSI Onhook Post-Ring DTMF
First
Ring
Figure: PHONE ADAPTER Caller ID Delivery Architecture
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