innovaphone IP21 - Manual (Page 12)

Operating Manual IP Adapters - 9 -
s 13. Control with numeric key
The following key sequences are used to control your telephone calls.
Key
sequence Function
+2
¾ Accept a waiting call
¾ Switch between active call and call on hold
+1
¾ The connection set up is deleted before the consultation
connection is set up
+4
¾ Replaces a hang-up for hold and retrieve. Once a second line
has been set up, the active call is connected with the call on hold
using this key sequence.
¾ Consultation
Note:
Even if you have activated only one channel, you can use these shortcut
keys to hold and retrieve, transfer a call and make consultation calls.