Grandstream Networks GXP2120 User Manual User Manual page 46

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
Remove OBP from route
Support SIP Instance ID
SUBSCRIBE for MWI
SUBSCRIBE for
Registration
Enable 100rel
Caller ID Display
FIRMWARE VERSION 1.0.5.24
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, 5062 for Account 2, 5064 for Account 3, 5066 for Account
4, 5068 for Account 5, 5070 for Account 6.
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".
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 SIP Instance ID is supported or not. The default setting is
"Yes".
When set to "Yes", a SUBSCRIBE for Message Waiting Indication will be sent
periodically. The phone supports synchronized and non-synchronized MWI.
The default setting is "No".
When set to "Yes", a SUBSCRIBE for Registration will be sent out periodically.
The default setting is "No".
The use of the PRACK (Provisional Acknowledgment) method enables
reliability to SIP provisional responses (1xx series). This is very important in
order to support PSTN internetworking. To invoke a reliable provisional
response, the 100rel tag is appended to the value of the required header of the
initial signaling messages.
When set to "Auto", the phone will look for the caller ID in the order of
P-Asserted Identity Header, Remote-Party-ID Header and From Header in the
incoming SIP INVITE. When set to "Disabled", all incoming calls are displayed
with "Unavailable". When set to "From Header", the phone will display the
caller ID based on the From Header in the incoming SIP INVITE. The default
GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 46 of 77