Grandstream Networks GXP1450 User Manual page 40

Register Expiration
Reregister Before Expiration
Local SIP Port
SIP Registration Failure Retry
Wait Time
SIP T1 Timeout
SIP T2 interval
SIP Transport
SIP URI Scheme when using
TLS
Use Actual Ephemeral Port in
Contact with TCP/TLS
Check Domain Certificates
Remove OBP from route
Validate Incoming Messages
Support SIP Instance ID
NAT Traversal
FIRMWARE VERSION 1.0.4.23
notify the server to unbind the connection. The default setting is "No".
Specifies the frequency (in minutes) in which the phone refreshes its
registration with the specified registrar. The default value is 60 minutes.
The maximum value is 64800 minutes (about 45 days).
Specifies the time frequency (in seconds) that the phone sends
re-registration request before the Register Expiration. The default value
is 0.
Defines the local SIP port used to listen and transmit. The default value
is 5060 for Account 1 and 5062 for Account 2.
Specifies the interval to retry registration if the process is failed. The
default value is 20 seconds.
SIP T1 Timeout. The default setting is 0.5 seconds.
SIP T2 Interval. The default setting is 4 seconds.
Determines the network protocol used for the SIP transport. Users can
choose from TCP, UDP and TLS.
Specifies if "sip:" or "sips:" will be used when TLS/TCP is selected for
SIP Transport. The default setting is "sips:".
Defines whether the actual ephemeral port in contact with TCP/TLS will
be used or not. This is used when TLS/TCP is selected for SIP Transfer.
The default setting is "No".
Defines whether the domain certificates will be checked or not when
TLS/TCP is used for SIP Transport. The default setting is "No".
Configures to remove outbound proxy from route. This is used for the
SIP Extension to notify the SIP server that the device is behind a
NAT/Firewall.
Defines whether the incoming messages will be validated or not. The
default setting is "No".
Defines whether SIP Instance ID is supported or not. The default setting
is "Yes".
This parameter configures whether the NAT traversal mechanism is
activated. Users could select the mechanism from No, STUN,
Keep-Alive, UPnP, Auto or VPN. If set to "STUN" and STUN server is
configured, the phone will route according to the STUN server. If NAT
type is Full Cone, Restricted Cone or Port-Restricted Cone, the phone
will try to use public IP addresses and port number in all the SIP&SDP
messages. The phone will send empty SDP packet to the SIP server
periodically to keep the NAT port open if it is configured to be
GXP2120/GXP2110/GXP2100/GXP1450 USER MANUAL Page 40 of 69