Grandstream Networks GXP1610 Administration Manual page 25

NAT Traversal
Proxy-Require
Account x -> SIP Settings -> Basic Settings
TEL URI
SIP Registration
Unregister Before New
Registration
Register Expiration
Reregister Before
Expiration
Enable OPTIONS
Keep Alive
OPTIONS Keep Alive
Interval
OPTIONS Keep Alive
Max Lost
Local SIP Port
SIP Registration
Failure Retry Wait Time
SIP T1 Timeout
fields below:

Primary IP: The primary IP address where the phone sends DNS query
to;

Backup IP 1;

Backup IP 2.
If SIP server is configured as domain name, phone will not send DNS query,
but use "Primary IP" or "Backup IP x" to send SIP message if at least one of
them are not empty. Phone will try to use "Primary IP" first. After 3 tries
without any response, it will switch to "Backup IP x", and then it will switch
back to "Primary IP" after 3 re-tries.
If SIP server is already an IP address, phone will use it directly even "User
Configured IP" is selected.
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 "Keep-Alive". Configure this to be "No" if an
outbound proxy is used. "STUN" cannot be used if the detected NAT is
symmetric NAT.
A SIP Extension to notify the SIP server that the phone is behind a
NAT/Firewall. Do not configure this parameter unless this feature is
supported on the SIP server.
If the phone has an assigned PSTN telephone number, this field should be
set to "User=Phone". Then a "User=Phone" parameter will be attached to
the Request-Line and "TO" header in the SIP request to indicate the E.164
number. If set to "Enable", "Tel:" will be used instead of "SIP:" in the SIP
request. The default setting is "Disable".
Selects whether or not the phone will send SIP Register messages to the
proxy/server. The default setting is "Yes".
If set to "Yes", the SIP user's registration information will be cleared when
the phone reboots. The SIP Contact header will contain "*" to 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.
Select whether or not the phone will keep sending a message to check the
connection with the server.
Specifies the frequency (in second) in which the phone will send the Keep
Alive message to the server.
Specifies the maximum number of allowed lost packet before the phone will
refresh its registration.
Defines the local SIP port used to listen and transmit. The default value is
5060 for Account 1, 5062 for Account 2, and 5064 for Account 3.
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.
GXP1610/GXP1620/GXP1625/GXP1628/
GXP1630 Administration Guide
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