AudioCodes Mediant 4000 SBC User Manual page 776

Parameter
Fake TCP alias
configure voip > sip-
definition settings > fake-
tcp-alias
[FakeTCPalias]
Reliable Connection
Persistent Mode
configure voip > sip-
definition settings >
reliable-conn-persistent
[ReliableConnectionPersi
stentMode]
TCP Timeout
configure voip > sip-
definition settings > tcp-
timeout
[SIPTCPTimeout]
SIP Destination Port
configure voip > sip-
definition settings > sip-
dst-port
[SIPDestinationPort]
Use user=phone in SIP
URL
configure voip > sip-
definition settings >
user=phone-in-url
[IsUserPhone]
Use user=phone in From
Header
configure voip > sip-
User's Manual

[1] Enable = (Default) The device uses the same TCP or TLS
connection for all SIP requests with the UA.
Note: For SIP responses, the device always uses the same TCP/TLS
connection, regardless of the parameter settings.
Enables the re-use of the same TCP/TLS connection for sessions with the
same user, even if the "alias" parameter is not present in the SIP Via
header of the first INVITE.

[0] Disable = (Default) TCP/TLS connection reuse is done only if the
"alias" parameter is present in the Via header of the first INVITE.

[1] Enable
Note: To enable TCP/TLS connection re-use, set the
EnableTCPConnectionReuse parameter to 1.
Enables setting of all TCP/TLS connections as persistent and therefore,
not released.

[0] = (Default) Disable. All TCP connections (except those that are set
to a proxy IP) are released if not used by any SIP dialog\transaction.

[1] = Enable - TCP connections to all destinations are persistent and
not released unless the device reaches 70% of its maximum TCP
resources.
While trying to send a SIP message connection, reuse policy determines
whether live connections to the specific destination are re-used.
Persistent TCP connection ensures less network traffic due to fewer
setting up and tearing down of TCP connections and reduced latency on
subsequent requests due to avoidance of initial TCP handshake. For TLS,
persistent connection may reduce the number of costly TLS handshakes to
establish security associations, in addition to the initial TCP connection set
up.
Note: If the destination is a Proxy server, the TCP/TLS connection is
persistent regardless of the settings of the parameter.
Defines the Timer B (INVITE transaction timeout timer) and Timer F (non-
INVITE transaction timeout timer), as defined in RFC 3261, when the SIP
transport type is TCP.
The valid range is 0 to 40 sec. The default is 64 * SipT1Rtx parameter
value. For example, if SipT1Rtx is set to 500 msec, then the default of
SIPTCPTimeout is 32 sec.
Defines the SIP destination port for sending initial SIP requests.
The valid range is 1 to 65534. The default port is 5060.
Note: SIP responses are sent to the port specified in the Via header.
Determines whether the 'user=phone' string is added to the SIP URI and
SIP To header.

[0] No = 'user=phone' string is not added.

[1] Yes = (Default) 'user=phone' string is part of the SIP URI and SIP
To header.
Determines whether the 'user=phone' string is added to the From and
Contact SIP headers.

[0] No = (Default) Doesn't add 'user=phone' string.
776
Description
Document #: LTRT-41729
Mediant 4000 SBC