Grandstream GXP1100 User Manual - Manual (Page 32)

FIRMWARE VERSION 1.0.8.4 GXP1100/GXP1105 USER MANUAL Page 30 of 53
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.
Proxy-Require
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.
Account 1 -> SIP Settings -> Basic Settings
TEL URI
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".
SIP Registration
Selects whether or not the phone will send SIP Register messages to the
proxy/server. The default setting is "Yes".
Unregister On Reboot
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".
Register Expiration
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).
Reregister Before
Expiration
Specifies the time frequency (in seconds) that the phone sends
re-registration request before the Register Expiration. The default value is 0.
Enable OPTIONS Keep
Alive
Enable OPTIONS Keep Alive to check SIP server status.
OPTIONS Keep Alive
Interval
Time interval for OPTIONS Keep Alive feature in seconds.
OPTIONS Keep Alive
Max Lost
Number of max host packets for OPTIONS Keep Alive feature before the
phone re-registration.
Local SIP Port
Defines the local SIP port used to listen and transmit. The default value is
5060 for Account 1.
SIP Registration Failure
Retry Wait Time
Specifies the interval to retry registration if the process is failed. The default
value is 20 seconds.