AudioCodes Mediant 4000 SBC User Manual page 775

User's Manual
Parameter
[NoAudioPayloadType]
SIP Transport Type
configure voip > sip-
definition settings > app-
sip-transport-type
[SIPTransportType]
Display Default SIP Port
configure voip > sip-
definition settings >
display-default-sip-port
[DisplayDefaultSIPPort]
Enable SIPS
configure voip > sip-
definition settings >
enable-sips
[EnableSIPS]
TCP/TLS Connection
Reuse
tcp-conn-reuse
[EnableTCPConnectionR
euse]
Version 7.2
Defines the payload type of the outgoing SDP offer.
The valid value range is 96 to 127 (dynamic payload type). The default is 0
(i.e. NoAudio is not supported). For example, if set to 120, the following is
added to the INVITE SDP:
a=rtpmap:120 NoAudio/8000\r\n
Note: For incoming SDP offers, NoAudio is always supported.
Determines the default transport layer for outgoing SIP calls initiated by
the device.

[0] UDP (default)

[1] TCP

[2] TLS (SIPS)
Note:

It's recommended to use TLS for communication with a SIP Proxy and
not for direct device-to-device communication.

For received calls (i.e., incoming), the device accepts all these
protocols.
Enables the device to add the default SIP port 5060 (UDP/TCP) or 5061
(TLS) to outgoing messages that are received without a port. This
condition also applies to manipulated messages where the resulting
message has no port number. The device adds the default port number to
the following SIP headers: Request-Uri, To, From, P-Asserted-Identity, P-
Preferred-Identity, and P-Called-Party-ID. If the message is received with a
port number other than the default, for example, 5070, the port number is
not changed.
An example of a SIP From header with the default port is shown below:
From:
<sip:+4000@10.8.4.105:5060;user=phone>;tag=f25419a96a
;epid=009FAB8F3E

[0] Disable (default)

[1] Enable
Enables secured SIP (SIPS URI) connections over multiple hops.

[0] Disable (default)

[1] Enable
When the SIPTransportType parameter is set to 2 (i.e., TLS) and the
parameter EnableSIPS is disabled, TLS is used for the next network hop
only. When the parameter SIPTransportType is set to 2 or 1 (i.e., TCP or
TLS) and EnableSIPS is enabled, TLS is used through the entire
connection (over multiple hops).
Note: If the parameter is enabled and the parameter SIPTransportType is
set to 0 (i.e., UDP), the connection fails.
Enables the reuse of an established TCP or TLS connection between the
device and a SIP user agent (UA) for subsequent SIP requests sent to the
UA. Any new out-of-dialog requests (e.g., INVITE or REGISTER) use the
same secured connection. One of the benefits of enabling the parameter is
that it may improve performance by eliminating the need for additional
TCP/TLS handshakes with the UA, allowing sessions to be established
rapidly.

[0] Disable = The device uses a new TCP or TLS connection with the
UA.
775
55. Configuration Parameters Reference
Description
Mediant 4000 SBC