8 - Document located within technology services on NTU.ac.uk 
 
 
Use a 
Headset 
Press the Headset button   if you use a 
headset (It will glow green when activated)  
 
To answer a new call press the headset 
button again.  At the end of the call press 
the headset button to disconnect. 
 
The phone will still be in headset mode 
ready for the next call. 
 
To go back to using the normal handset 
press the headset button until the light goes 
off. 
 
 
 
 
Where to 
Find More 
Information 
The IS Service Desk should be your first point of contact if you have 
problems using your Cisco IP Phone 7940 & 7942 (call 88500).  For 
training enquiries contact the centre for professional learning and 
development (CPLD).