Table of Contents
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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)
Min-SE (s)
UAC Specify Refresher
Determines if the device 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.
Default 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 defined
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 continue until it
reaches the T2 value. The default setting is
4 sec.
Defines the amount of time that the server
transaction can remain when an unreliable
response (3xx-6xx) is received. The valid
value is 0-64 seconds.
The default value is 0.
Configures the device 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 acknowledgment system to the
provisional Responses (1xx). If it is set to
"Yes", the device will respond to the 1xx
response from the remote party. The
default is "No".
Allows the device to use the session timer,
when set to "Yes", it will be added in the
SIP INVITE message to notify the server.
Configures the device'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.
Determines the minimum session
expiration timer (in seconds) if the device
act as a timer refresher. Default is 90. The
valid range is from 90 to 64800.
Sets which party will refresh the active
session if the device makes outbound
calls. If it is set to "UAC" and the remote
party does not support the Refresher
feature, the device will refresh the active
session.
If it is set to "UAS", the remote party will
refresh it. If it is set to "Omit", the header
will be omitted so that it can be selected
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