innovaphone IP21 - Manual (Page 8)

Operating Manual IP Adapters - 5 -
6. Station guarding
This function allows you to respond in a particular way to incoming calls.
In the idle state, the telephone is muted. A dial tone is nonetheless forwarded to the
caller.
Activity Code Description
Station
guarding: all
Enable
Disable *42#
#42#
The mute function for incoming external and
internal calls.
Station
guarding:
internal
Enable
Disable *421#
#421#
The mute function for internal telephone calls.
Station
guarding:
external
Enable
Disable *422#
#422#
The mute function for external telephone calls.
7. Call waiting function
Activity Code Description
Call waiting
function
Enable/Disable *43#
#43#
This function allows you to control call waiting while
engaged in a telephone call.