CS5121 Telephone User's Manual
www.vtechphones.com
6
Handset layout
Getting started
/VOL-/CID
•  When  the  telephone  is  not  in  use,  press  to 
review the call log.
•  Press and hold while the telephone is not in use 
to adjust ringer volume. 
•  During a call, press to decrease the listening 
volume. A double beep will sound at the 
lowest setting.
•
Press to scroll down while in programming mode 
or reviewing the redial list.
PROG 
•  Press to enter programming mode 
while the telephone is not in use.
/FLASH
•  Press to make or answer a call.
•  During a call, press to receive an 
incoming call when you receive a call 
waiting alert.
CHAN/REMOVE
•  Switch to a clearer channel while on a call.
•  Press and hold to delete all records in the 
call log when telephone is not in use. 
When reviewing the call log or redial list,  
  press to delete the desired record.
•
 /VOL+/
•  Press to display the directory when the 
telephone is not in use.
•  Press and hold adjust the ringer volume 
when the telephone is not in use. 
•  During a call, press to increase the listening 
volume. A double beep will sound when the 
highest setting is reached.
•  Press to scroll up while in programming mode 
or reviewing the redial list.
OPE R
D E F
JK L
P
QR S
W
X Y Z
TUV
MNO
TO NE
A BC
CHARGE
SELECT 
•  Press  to  store  a  programming  option  or  a 
directory entry.
OFF
•  During a call, press to hang up.
•  While the handset is ringing, press to silence 
the ringer.
•
  Press and hold while the telephone is 
not in use to erase the MISSED CALLS 
display.
•  During programming, press to exit without 
making changes.
CHARGE light
•  On when the handset is charging in the telephone 
base.
TONE
*
•  Press to switch to tone dialing temporarily 
when using the pulse service (page 13). 
#
•  Press repeatedly to display other dialing 
options when reviewing the call log (page 26).
REDIAL/PAUSE
•  Press
repeatedly to review the redial list. 
•  While  dialing  or  entering  numbers  into  the 
directory, press to insert a dialing pause.










