Philips Onis 380 Vox - Manual (Page 29)

Intercom 28
Conference call
Conference call allows one external call to be shared with 2 handsets (in
Intercom).All 3 people can share the conversation. No operator
subscription is needed.
1- Press
2- Scroll to Intercom, validate
3- Select from the list the handset you want to call and Call
4- Take the call on the other handset
5- Use the Conference call option, validate
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