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For a local conference, if the conference initiator leaves the conference, all parties are 
disconnected and the conference call ends. You can enable Transfer on Conference Hang Up 
feature, and allows the other parties to remain connected when the conference initiator drops the 
conference call. 
 
The following table lists the parameters you can use to configure local conference. 
 
It enables or disables the local conference feature for the IP phone. 
 
Features->SIP-> Local Conference Enable 
 
 
Network conference, also known as a centralized conference, provides you with the flexibility of 
call with multiple participants (more than three). The IP phones implement network conference 
using the REFER method specified in RFC 4579. This feature depends on the support from a SIP 
server 
For network conference, if any party leaves the conference, the remaining parties are still 
connected. 
 
The following table lists the parameter you can use to configure network conference. 
SIPNConfUriX 
H3P/H3G/H3W: (X=1-3) 
H6/H6W: (X=1-4) 
It configures the network conference URI for a specific account.  
Note : Network conference URI  take effect only when local conference phone to false 
Account->Advanced-> N-conference URI 
 
User can mute the phone in an idle state to prevent the unintended situation. The mute state keeps 
during the calls until user unmutes the microphone manually or until the phone restarts. 
The following table lists the parameter you can use to enable or disable keep mute. 
It configures the keep mute feature for the IP phone. 
 
 
You can set the phone automatically redial the last dialed number when the callee is temporarily 
unavailable. Both the number of attempts and waiting time between redials are configurable. 
 
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