Version 6.6 601 October 2014
Installation & Operation Manual 40. General SIP Configuration
Table 40-10: SIP Media Settings
Parameter
Name
Type
Provisioning
Type
Description
Enable Early
Media
Enum
Disable, Enable
Instant Enables the gateway to send a 183 Session
Progress response with SDP (instead of 180
Ringing), allowing the media stream to be
established prior to the answering of the call.
Sending a 183 response depends on the
Progress Indicator (PI). It is sent only if PI is
set to 1 or 8 in the received Proceeding or
Alert PRI messages. For CAS devices, see
the Progress Indicator To IP Parameter.
Comfort Noise
Negotiation
Enum
Disable, Enable
Instant Enables negotiation and usage of Comfort
Noise (CN).
The use of CN is indicated by including a
payload type for CN on the media
description line of the SDP. The device can
use CN with a codec whose RTP time stamp
clock rate is 8,000 Hz (G.711/G.726). The
static payload type 13 is used. The use of
CN is negotiated between sides. Therefore,
if the remote side doesn't support CN, it is
not used.
Note: Silence Suppression must be enabled
to generate CN.
RTCP-XR Esc
IP
String
Up to 49 chars
Instant Defines the IP address of the Event State
Compositor (ESC). The media server sends
RTCP-XR reports using PUBLISH messages
to this server. The address can be
configured as a numerical IP address or as a
domain name.
RTCP-XR
Report Mode
Enum
Disable, End Call,
End Call And
Periodic
Instant Defines whether or not RTCP-XR reports are
sent to the Event State Compositor (ESC)
and if so, defines the interval in which they
are sent.
Disable – RTCP-XR reports are not sent
to the ESC
End Call – RTCP-XR reports are sent to
the ESC at the end of each call
End Call And Periodic – RTCP-XR
reports are sent to the ESC at the end of
each call and periodically according to
the parameter RTCP Interval
Media IP
Version
Enum
PreferIPv6,
PreferIPv4,
Instant Defines the preferred RTP media IP
addressing version for outgoing SIP calls.
This is indicated in the "c=" field
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