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mode.
Local Port
Set sip port of each line.
RFC Privacy
Edition
Set Anonymous call out safely; Support RFC3323
and RFC3325.
Enable Via rport
Enable or disable system to support RFC3581. Via
rport is a special way to realize SIP NAT.
Enable PRACK
Enable/Disable SIP PRACK function (basically is
used at). Suggest using the default configuration.
Long Contact
Set more parameters in contact field, connect with
SEM server.
URI Conversion
Convert # to %23 when send the URI.
Dial Without
Register
Enable/Disable Dial without Register. If enabled,
you can call directly the gateway.
Ban Anonymous
Call
Set to ban anonymous Call.
Enable DNS SRV
Support DNS looking up with _sip.udp mode
Enable Session
Timer
Enable/Disable Session Timer to support RFC4028
or not. It will refresh the SIP sessions.
Session Timeout
Set the time out of the session.
Conference Type
Select "Local" or "Remote".
Conference
Number
Input the number of the conference.
Subscribe for
MWI
Enable/Disable the subscribe for MWI.
Subscribe Period
Overtime of resending subscribe packet. Suggest
using the default configuration.
Registration
Expire
Set expire time of SIP server register, default is 60
seconds. If the register time of the server requested is
longer or shorter than the expire time, the phone will
change automatically the time into the time
recommended by the server, and register again.
Server Type
Select the special type of server which is encrypted,
or has some unique requirements or call flows.
RFC Protocol
Edition
Select SIP protocol version to adapt for the SIP
server which uses the same version as you select. For
example, if the server is CISCO5300, you need to
change to RFC2543, else phone may not cancel call
normally. System uses RFC3261 as default.
Transport
Protocol
Set transport protocols, TCP or UDP.
Keep
Authentication
Enable or Disable. Keep Authentication. If it is
enabled, system will take the last authentication field
which is passed the authentication by server to the
Multi-media Video Phone UTT-990 User Manual