PLANET VIP-2020PT - Manual (Page 65)

Enterprise HD PoE IP Phone
VIP-2020PT
the busy forward function on User phone, it will send message
to the server, and the server will turn off the function
immediately.
No Answer CFwd On
Code
Set the No Answer CFwd On Code, when User choose to
enable the on answer forward function on User phone, it will
send message to the server, and the server will turn on the
function immediately. When there are calls to the extension,
the server will forward it to the set number automatically based
the forward type. And the IP phone will not show the record in
the call history anymore.
No Answer CFwd Off
Code
Set the No Answer CFwd Off Code, when User choose to
disable the busy forward function on User phone, it will send
message to the server, and the server will turn off the function
immediately.
Anonymous On Code
Set the Anonymous On Code, When User choose to enable
the anonymous call function on User IP phone, it will send
information to the server, and the server will enable the
anonymous call function for User IP phone automatically.
Anonymous Off Code
Set the Anonymous Off Code, When User chooses to disable
the anonymous call function on User IP phone, it will send
information to the server, and the server will disable the
anonymous call function for User IP phone automatically.
Keep Alive Type
Specify the keep alive type, if the type is option, the
phone will send option sip message to server every NAT Keep
Alive Period(s), then the server responses with 200 to keep
alive. If the type is UDP, the phone will send UDP message to
server to keep alive every NAT Keep Alive Period(s).
Keep Alive Interval Set examining interval of the server, default is 60 seconds.
User Agent Set the user agent if have, the default is VoIP Phone 1.0.
DTMF Type
Select DTMF sending mode, there are three modes:
z DTMF_RELAY
z DTMF_RFC2833
z DTMF_SIP_INFO
Different VoIP Service providers may provide different modes.
Local Port Set sip port of each line.
Ring Type Set ring type of each line.
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 config.
Enable Long Contact
Set more parameters in contact field; connection with SEM
server.