AudioCodes Mediant 1000B - Page 451

Version 7.2 451 Mediant 1000B Gateway & E-SBC
User's Manual 20. Coders and Profiles
Parameter Description
[IpProfile_RTPRedundancyDe
pth]
that arrives in subsequent packets. This is required, for example, in
wireless networks where a high percentage (up to 50%) of packet
loss can be experienced.
 [0] 0 = (Default) Disable.
 [1] 1 = Enable -
previous voice payload packet is added to current
packet.
Note:
 When enabled, you can configure the payload type, using the
RFC2198PayloadType parameter.
 For the Gateway application only: The RTP redundancy dynamic
payload type can be included in the SDP, by using the
EnableRTPRedundancyNegotiation parameter.
 The corresponding global parameter is RTPRedundancyDepth.
Gateway
Early Media
early-media
[IpProfile_EnableEarlyMedia]
Enables the Early Media feature for sending media (e.g., ringing)
before the call is established.
 [0] Disable (default)
 [1] Enable

Digital: The device sends a SIP 18x response with SDP,
allowing the media stream to be established before the call is
answered.

Analog: The device sends a SIP 183 Session Progress
response with SDP instead of a 180 Ringing, allowing the
media stream to be established before the call is answered.
Note:
 Digital: The inclusion of the SDP in the 18x response depends on
the ISDN Progress Indicator (PI). The SDP is sent only if PI is set
to 1 or 8 in the received Proceeding, Alerting, or Progress
messages. See also the ProgressIndicator2IP parameter, which if
set to 1 or 8, the device behaves as if it received the ISDN
messages with the PI.

CAS: See the ProgressIndicator2IP parameter.

ISDN: Sending a 183 response depends on the ISDN PI. It is
sent only if PI is set to 1 or 8 in the received Proceeding or
Alerting messages. Sending 183 response also depends on
the ReleaseIP2ISDNCallOnProgressWithCause parameter,
which must be set to any value other than 2.
 See also the IgnoreAlertAfterEarlyMedia parameter. The
parameter allows, for example, to interwork Alert with PI to SIP
183 with SDP instead of 180 with SDP.
 You can also configure early SIP 183 response immediately upon
the receipt of an INVITE, using the EnableEarly183 parameter.
 Analog: To send a 183 response, you must also set the
ProgressIndicator2IP parameter to 1. If set to 0, a 180 Ringing
response is sent.
 The corresponding global parameter is EnableEarlyMedia.
Early 183
enable-early-183
[IpProfile_EnableEarly183]
Enables the device to send SIP 183 responses with SDP to the IP
upon receipt of INVITE messages.
 [0] Disable (default)
 [1] Enable = By sending the 183 response, the device opens an