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
30
31
4
IN USE
light
• On when the handset
is in use, or when the
answering system
is answering an
incoming call.
• Flashes when there is
an incoming call, or
another telephone
sharing the same line
is in use.
5
X /
DELETE
• Press to delete the
message currently
playing.
• Press twice to delete
all old messages
when the telephone is
not in use.
/ SKIP
• Press to skip a
message.
/
REPEAT
• Press to repeat a
message.
• Press twice to play the
previous message.
/
PLAY/
STOP
• Press to start or stop
message playback.
• During call screening,
press to temporarily
turn the call screening
on or off.
6 ANS ON
• Press to turn the built-
in answering system
on or off.
7 Antenna
8
CELL 1 /
CELL 2
Lights
• Light on when the
telephone base is
paired and connected
with a Bluetooth
device.
• Light flashes when the
telephone base is in
discoverable mode.
• Press to connect the
paired cell Bluetooth
device.
• Press and hold to add
or replace a Bluetooth
device.
9 FIND HS
• Press to page all
system handsets.
Telephone base alert tones
1 short
beep
• Plays at the end of each
message playback.
Beeps
every 10
seconds
• Message alert tone is
on and there are new
messages.
1 long
beep
• Call screening is on and
the answering system is
about to
• record a message.
• Plays at the end of all
messages playback.
Operate
Make, answer or end a home
call
Make a home call
• Press HOME/FLASH or on the
handset, then enter the telephone
number.
Predial a home call
• Enter the telephone number, then
press
HOME/FLASH or to
dial.
Answer a home call
• Press HOME/FLASH or on
the handset.
End a home call
• Press OFF/CANCEL, or put the
handset in the telephone base or
charger.
Using a Bluetooth headset to answer a
home call:
You can use a Bluetooth headset to
answer home calls. However, you
need to keep the device within 15
feet of the telephone base for optimal
performance. Please see the user’s
manual of your Bluetooth headset for
more information.
Answer or end a home call using a
Bluetooth headset:
• Press the call key on your headset.
NOTES
• The handset displays Unable to call if
the telephone line is in use.
• The screen shows the elapsed time
as you talk (in hours, minutes and
seconds).
• When predialing (preview
numbers before dialing), press
MUTE/DELETE on the handset to
backspace and delete; press and
hold REDIAL/PAUSE to insert a
dialing pause (a P appears).