User Guide
Table Of Contents
- IS8121-X_QSG_V2_20210204
- IS8121-X_IS8122-X_SCB_V1.1_20210616_BW
- IS8121-X_WEBCIB_v1_210525-compressed
- Install | Set up 
- Operate
- Make, answer or end a home call
- Make, answer or end a cell call
- Call waiting on the home line
- Call waiting on the cell line
- Predial via home call and cell call
- Answer an incoming cell call while on a home call
- Answer an incoming home call while on a cell call
- View dialing options
- Option while on a call
- Join a call
- Intercom
- Sound
- Temporary tone dialing
- Find handset
- Use the phone menu
- Phonebook | Phonebook entry
- Redial list
- Chain dialing
- Caller ID
- About caller ID
- Save a caller ID log entry to the phonebook
- Save a caller ID log entry to block list
- Save a caller ID log entry to allow list
- Save a caller ID log entry to Star name list
- Review the caller ID log
- Dial a caller ID log entry
- Delete caller ID log entries
- Caller ID memory match
- Missed call indicator
- Introducing Bluetooth©
- Bluetooth setup
- Remote voice control
- About Smart call blocker*
- Set profile
- Block list
- Allow list
- Star name list
- Screening announcements
- Voice guide to set Smart call blocker
- Call handlings with Smart call blocker
- Answering system
- Difference between the built-in answering system and voicemail service
- Use your built-in answering system
- New message indication
- Turn on or off the answering system
- Playback messages
- Delete all messages
- Answering system remote access
- Call intercept while using answering system
- Recording memo
- Turn on or off the call screening
- Screen a call with answering system
- Annoucement
- Retrieve voicemail
- Configure | Settings
- General product care
- Technical specifications
- Frequently asked questions
26
27
8
MUTE/
DELETE
• During a call, press to
Mute the microphone.
• When the handset is
ringing, press to mute
the ringer temporarily.
• While reviewing
the caller ID log, the
phonebook, redial list,
allow list, block list or
star name list, press to
delete an individual
entry.
• While predialing,
press to delete digits.
• When entering names
or numbers, press
to delete a digit or
character.
• When entering names
or numbers, press and
hold to erase all digits
or characters.
• During message
or announcement
playback, press
to delete the
playing message
or the recorded
announcement.
9
• Press to display the
menu.
• Once in the menu,
press to select an item
or save an entry or
setting.
10
p
VOLUME
• Press to show
phonebook entries
when the telephone is
not in use.
• Press to scroll up while
in a menu.
• Press to increase the
listening volume
when on a call, or
increase the message
playback volume.
• While entering names
or numbers, press to
move the cursor to
the right.
VOLUME
q
CID
• Press to review the
caller ID log when the
telephone is not in
use.
• Press to scroll down
while in a menu.
• Press to decrease
the listening volume
when on a call, or
decrease the message
playback volume.
• While entering names
or numbers, press to
move the cursor to
the left.
11
• Hang up a call.
• While in a menu,
press to cancel an
operation, back up to
the previous menu, or
exit the menu display;
or press and hold this
button to exit to idle
mode.
• When the handset is
ringing, press to mute
the ringer temporarily.
• Press and hold while
the telephone is not
in use to erase the
missed call indicator.
12
• Press and hold to set
and turn on the QUIET
mode, or turn it off.
• When reviewing a
caller ID log entry,
press repeatedly to
view other dialing
options.
13
CALL
BLOCK/
VOICE
• Press to block the
incoming home call
or cell call when the
telephone is ringing.
• When on a home call
or cell call, press to
block the call.
• While connected
to one or two cell
phones, press
to activate the
voice-controlled
application of one of
the connected cell
phones.
14
REDIAL/
PAUSE
• Review the redial list.
• Press and hold to
insert a dialing pause
while dialing or
entering numbers.