Cisco SR520-FE-K9 Administration Manual page 98

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98
There are three types of Caller IDs:
• On Hook Caller ID Associated with Ringing—Type of Caller ID is used for
incoming calls when the attached phone is on hook. See the following figure
(a) – (c). All CID methods can be applied for this type of CID.
• On Hook Caller ID Not Associated with Ringing—Used to send VMWI
signal to the phone to turn the message waiting light on and off (see Figure
1 (d) and (e). This is available only for FSK-based CID methods: (Bellcore,
ETSI FSK, and ETSI FSK With PR).
• Off Hook Caller ID—Used to deliver caller-id on incoming calls when the
attached phone is off hook (see the following figure). This can be call
waiting caller ID (CIDCW) or to notify the user that the far end party identity
has changed or been updated (such as due to a call transfer). This is
available only for FSK-based CID methods: (Bellcore, ETSI FSK, and ETSI
FSK With PR).
a) Bellcore/ETSI Onhook Post-Ring FSK
First
Ring
b) ETSI Onhook Post-Ring DTMF
First
Ring
c) ETSI Onhook Pre-Ring FSK/DTMF
Polarity
Reversal
d) Bellcore Onhook FSK w/o Ring
e) ETSI Onhook FSK w/o Ring
Polarity
Reversal
f) Bellcore/ETSI Offhook FSK
Cisco SRP500 Series Services Ready Platforms Administration Guide (SRP520 Models)
CAS
(DTAS)
OSI
CAS
(DTAS)
CAS
(DTAS)
Configuring Voice
Managing Caller ID Services
FSK
DTMF
DTMF/
FSK
FSK
FSK
Wait for
FSK
ACK
First
Ring