P a g e
|
23
GXP17xx Administration Guide
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 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. Set this to "VPN" if OpenVPN is used.
Proxy-Require
Determines 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 x
SIP Settings
Basic Settings
TEL URI
Determines if the phone has an assigned PSTN telephone number. This field
should be set to "User=Phone", so that "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
Permits the SIP user's registration information to 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 time interval (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 interval (in seconds) that the phone sends re-registration
request before the Register Expiration. The default value is 0.
Enable OPTIONS
Keep Alive
Select whether or not the phone will keep sending a message to check the
connection with the server.
OPTIONS Keep
Alive Interval
Specifies the time interval (in second) in which the phone will send the Keep
Alive message to the server.
OPTIONS Keep
Alive Max Lost
Specifies the maximum number of allowed lost packet before the phone will
refresh its registration.
Local SIP Port
Defines the local SIP port used to listen and transmit. The default value is 5060
for Account 1, 5062 for Account 2, 5064 for Account 3, 5066 for Account 4. The
valid range is from 1 to 65535.
SIP Registration
Failure Retry Wait
Time
Specifies the time interval to retry registration if the process is failed. The valid
range is 1 to 3600. The default value is 20 seconds.
SIP T1 Timeout
SIP T1 Timeout is an estimate of the round trip time of transactions between a
client and server. If no response is received the timeout is increased, and
