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
110
111
Technical specifications
Frequency
control
• Crystal controlled PLL
synthesizer
Transmit
frequency
• Handset: 1921.536-1928.448
MHz
• Telephone base: 1921.536-
1928.448 MHz
Channels
• 5
Nominal
effective range
• Maximum power allowed by
FCC and IC. Actual operating
range may vary according to
environmental conditions at
the time of use.
Power
requirement
• Handset: 2.4V Ni-MH battery
• Telephone base: 6V DC @
400mA
• Charger: 6V DC @ 400mA
Memory
• Phonebook: 1000 memory
locations; up to 30 digits and
15 characters
• Caller ID log: 50 memory
locations; up to 24 digits and
15 characters
• Call block: 1000 entries
When it is fully charged, you can expect the following
performance.
Operation Operating time*
Talk time
(cordless
handset)
• 10 hours
Standby
• 5 days
* Operating times vary depending on your actual use
and the age of the battery.
DECT 6.0 digital technology
The VTech DECT 6.0 products offer
unsurpassed range performance and
sound clarity. This is achieved through
a unique antenna design and advances
in noise-filtering technology. An
independent laboratory has confirmed
that VTech DECT 6.0 products perform
up to 45% better in range competitions
against similarly equipped phones of
the leading competition. Now, calls can
be taken in the basement, backyard and
garage with exceptional sound quality.
Telephone operating range
This cordless telephone operates within
the maximum power allowed by the
Federal Communications Commission
(FCC). Even so, this handset and
telephone base can communicate over
a certain distance — which can vary
with the locations of the telephone
base and handset, the weather, and the
construction of your home or office.
Redefining long range
coverage and clarity
This telephone base comes with an
antenna which gives much better clarity
and covers a longer range than before.
Simulated full-duplex handset
and base speakerphones
The simulated full-duplex speakerphone
on your handset and telephone base
allow both ends of a call to speak and
be heard at the same time. Optimal
performance is subject to external
factors and individual usage.
Frequently asked
questions
Below are the questions most frequently
asked about the cordless telephone.
If you cannot find the answer to your
question, visit our U.S. website at
www.vtechphones.com or call
1 (800) 595-9511 for customer service.
In Canada, go to phones.vtechcanada.
com or call 1 (800) 267-7377.
My
telephone
does not
work at all.
Make sure the telephone base is
installed properly, and battery is
installed and charged correctly. For
optimum daily performance, return
the handset to the telephone base
after use.
The display
shows No
line. I cannot
hear the dial
tone.
Disconnect the telephone line cord
from your telephone and connect it
to another telephone. If there is no
dial tone on that other telephone
either, then the telephone line cord
may be defective. Try installing a
new telephone line cord.
If changing the telephone line cord
does not help, the wall jack (or the
wiring to this wall jack) may be
defective. Contact your telephone
service provider.
You may be using a new cable or
VoIP service, the existing telephone
jacks in your home may no longer
work. Contact your service provider
for solutions.
I cannot dial
out.
Make sure there is a dial tone before
dialing. It is normal if the handset
takes a second or two to synchronize
with the telephone base before
producing a dial tone. Wait an extra
second before dialing.
Eliminate any background noise.
Mute the handset before dialing, or
dial from another room in your home
with less background noise.