Panasonic EB-A100 - Manual (Page 22)

Basic Operations 19
Hold
You can put a call on hold.
During a call:
@ (Hold)
To resume:
A (Back)
Making a second call
During a call:
1. Enter the second phone number or select a phone
number from the Contacts list (see “Contacts” on page
18).
2. C The first call is put on hold
NOTE: This function is network dependent.
NOTE: This function is network dependent.