Grandstream Networks GXV3380 Administration Manual page 43

SIP URI Scheme When
Using TLS
Use Actual Ephemeral
Port in Contact with
TCP/TLS
Support SIP Instance ID
SIP T1 Timeout
SIP T2 Interval
SIP Timer D Interval
Remove OBP from
Route
Enable 100rel
Session Timer
Enable Session Timer
Session Expiration (s)
Defines which SIP header, "sip" or "sips", will be used if TLS is selected
for SIP Transport. The default setting is "sip".
Determines the port information in the Via header and Contact header of
SIP message when the phone system use TCP or TLS. 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.
The default setting is "No".
Determines if the phone system will send SIP Instance ID. The SIP
instance ID is used to uniquely identify the device. If set to "Yes", the SIP
Register message Contact header will include +sip.instance tag.
The default setting is "Yes".
Defines an estimate of the round-trip time of transactions between a client
and server. If no response is received in T1, the figure will increase to 2*T1
and then 4*T1. The request re-transmit retries would continue until a
maximum amount of time define by T2.
The default setting is 0.5 sec.
Specifies the maximum retransmit time of any SIP request messages
(excluding the SIP INVITE message). The re-transmitting and doubling of
T1 continues until it reaches the T2 value. The default setting is 4 sec.
Defines the amount of time that the server transaction can remain when
unreliable response (3xx-6xx) received. The valid value is 0-64 seconds.
The default value is 0.
Configures the phone system to remove the outbound proxy URI from the
Route header. This is used for the SIP Extension to notify the SIP server
that the device is behind a NAT/Firewall. If it is set to "Yes", it will remove
the Route header from SIP requests. The default setting is "No".
Actives PRACK (Provisional Acknowledgment) method. PRACK improves
the network reliability by adding an acknowledgement system to the
provisional Responses (1xx). It is set to "Yes", the phone system will
response to the 1xx response from the remote party. Default is "No".
Allows the phone system to use the session timer, when set to "Yes", it will
be added in the SIP INVITE message to notify the server.
Configures the phone system's SIP session timer. It enables SIP sessions
to be periodically "refreshed" via a SIP request (UPDATE, or re-INVITE).
If there is no refresh via an UPDATE or re-INVITE message, the session
will be terminated once the session interval expires. Session Expiration is
the time (in seconds) where the session is considered timed out, provided
no successful session refresh transaction occurs beforehand.
The default setting is 180. The valid range is from 90 to 64800.
GXV3380 Administration Guide
Version 1.0.1.19
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