Gigaset SX761 dsl Manual page 74

Call guide
Call answering and forwarding
Key combination
*21*[number]#
#21#
*61*[number]#
#61#
*67*[number]#
#67#
#77#
74
Effect
internal
internal
internal
Description
*21*
Example:
*21**2#
*61*
*67*
#
#21#
#
#61#
#
#67#
#77#