DSL-G2452GR
AC1200 MU-MIMO Wireless Dual Band
VDSL2 Router with ADSL2+/3G/LTE/Gigabit Ethernet WAN
Support, 2 FXS Ports and USB Port
User Manual
Configuring via Web-based Interface
Parameter
Description
Common Settings
Support PRACK
Move the switch to the right to enable the PRACK method
(
Provisional Response ACKnowledgement
). The PRACK method
provides reliable transmission of packets with provisional responses
to an initiating request upon setting a session in accordance with
RFC3262.
Registration
Registration expire
timeout
A time period (in seconds) after which the router changes the
registration status in case of no response from the SIP proxy server.
Registration retry
interval
A time period (in seconds) after which the registration will be
repeated.
Session expires
A time period (in seconds) between attempts to check the status of
the voice session.
Session refresher
From the drop-down list, select the preferred choice of checking the
Internet connection state during the voice session.
•
Local
: The router sends special SIP packets for checking the
Internet connection state.
•
Remote
: The SIP proxy server sends special SIP packets for
checking the Internet connection state.
•
Auto
: The SIP proxy server defines which party checks the
Internet connection state.
Session update method
The voice session update method. Contact your ISP to clarify which
value needs to be selected.
NAT
NAT keep alive
Move the switch to the right to allow the router to support the state
of automatically forwarded ports by periodic exchange of service
messages. If the switch is moved to the right, the
NAT support
interval
field is available for editing.
NAT support interval
The time interval (in seconds) between service messages. Specify
the needed value.
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