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
32
33
Make, answer or end a cell
call
Make a cell call
1. Press
CELL on the handset. The
handset displays Select a device.
• If you have only one cell phone
connected to the telephone base,
press MENU/SELECT to select the
only device.
• If you have two cell phones
connected to the telephone,
press q CID or p
to select
a cell phone and then press
MENU/SELECT.
2. Enter the telephone number on the
handset, then press
CELL to dial.
Predial a cell call
1. Enter the telephone number.
2. Press
CELL on the handset to dial.
• If you have only one cell phone
connected to the telephone base,
it is automatically selected to make
cell calls.
• If you have two cell phones
connected to the telephone base,
the screen displays Select a device.
Press q CID or p to select a
cell phone and then press MENU/
SELECT.
Answer a cell call
• Press
CELL or on the handset.
End a cell call
• Press OFF/CANCEL, or put the handset
in the telephone base or charger.
NOTES
• The screen displays Unable to call if
your cell phone is in use.
• You can also use your cell phone to
answer the call. If you answer with
your cell phone, it disconnects from
the telephone base.
• 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
or telephone base to backspace
and delete; press and hold
REDIAL/PAUSE to insert a dialing
pause (a P appears).
• Make a cell call using the cell lines
of your telephone system instead
of using the remote voice control
feature, if you need to press dialing
keys (0-9, TONE
or QUIET#) during
a call.
Call waiting on the home line
If you subscribe to call waiting service
from your telephone service provider,
and someone calls while you are already
on a call, the screen flashes
, and you
hear a tone.
• Press HOME/FLASH on the
handset to put your current call on
hold and take the new call.
• Press HOME/FLASH on the
handset at any time to switch back
and forth between calls.
NOTES
• If the Smart call blocker feature is
on and in screening mode, and you
receive a call waiting home call:
• If you have already picked up a
screened home call, the telephone
checks whether the call waiting
call’s number can be found in the
phonebook, block list or allow list.
It also checks whether the caller
name is in the star name list. After
that, the telephone displays the
caller ID information or Blocked
call accordingly. You can press
HOME/FLASH or to take
the new call.
• If the telephone is screening a
home call, the call waiting call will
be ignored and logged as missed
call in the caller ID log.
• The screening feature of Smart call
blocker is applicable to home calls
only.
Call waiting on the cell line
If you subscribe to call waiting service
from your cell phone service provider,
and someone calls while you are already
on a call on the cell line, the screen
flashes
, and you hear a beep.
• Press HOME/FLASH on the
handset, or press
HOME or
PTT/FLASH on the telephone base
to put your current call on hold and
take the new call.
• Press HOME/FLASH on the
handset or press
HOME or
PTT/FLASH on the telephone base
at any time to switch back and forth
between calls.
NOTES
• If the Smart call blocker feature is
on and in screening mode, and you
receive a call waiting cell call:
• If you have already picked up a
screened home call, the telephone
checks whether the call waiting
cell call’s number can be found in
the block list. If yes, the telephone
displays Blocked call and rejects
the call.
• The screening feature of Smart call
blocker is applicable to home calls
only.