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Hot line Number Set hot line number of each line.
Conference Number Configure conference number in server conference.
Transfer Expire
Time
For the phone supports the transfer of certain special features server, set
interval time between sending “bye” and hanging up after the phone
transfers a call.
Enable subscribe Enable the option, the phone will receive the notification from the
server.
Enable Keep
Authentication
Enable/Disable Keep Authentication System will take the last
authentication field which is passed the authentication by server to the
request packet. It will decrease the server’s repeat authorization work, if
it is enable.
NAT Keep Alive Enable/Disable keeps NAT of SIP alive.
If some server refuse to register with too short interval time, and has no
packets sending to device in private network to keep NAT alive, user
could set this function ON. It need set the keep alive interval time less
than the NAT server’s.
Enable Via rport Enable/Disable system to support RFC3581. Via rport is special way to
realize SIP NAT.
Enable PRACK Enable or disable SIP PRACK function, suggest use the default
configuration.
Long Contact Set more parameters in contact field; connection with SEM server
Enable URI Convert Convert # to %23 when send the URI.
Dial Without
Register
Set call out by proxy without registration.
Ban Anonymous
Call
Set to ban Anonymous Call.
Enable DNS SRV Support DNS looking up with _sip.udp mode
Forward Type Select call forward mode, the default is Off.
z Off: Close down calling forward
z Busy: If the phone is busy, incoming calls will be forwarded to the
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