Grandstream GXP21xx Series User Manual - Manual (Page 52)

FIRMWARE VERSION 1.0.8.4 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 50 of 85
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, 5062 for Account 2, 5064 for Account 3, 5066 for Account
4, 5068 for Account 5, 5070 for Account 6.
SIP Registration Failure
Retry Wait Time Specifies the interval to retry registration if the process is failed. The default
value is 20 seconds.
SIP T1 Timeout SIP T1 Timeout. The default setting is 0.5 seconds.
SIP T2 interval SIP T2 Interval. The default setting is 4 seconds.
SIP Transport
Determines the network protocol used for the SIP transport. Users can choose
from TCP, UDP and TLS.
SIP URI Scheme when
using TLS Specifies if "sip:" or "sips:" will be used when TLS/TCP is selected for SIP
Transport. The default setting is "sips:".
Use Actual Ephemeral
Port in Contact with
TCP/TLS
This option is used to control the port information in the Via header and
Contact header. If set to No, these port numbers will use the permanent
listening port on the phone. Otherwise, they will use the ephemeral port for the
particular connection.
Remove OBP from route
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.