Version 6.8 171 Mediant 2600 E-SBC
User's Manual 14. Media
14.3.2.2 Configuring RFC 2833 Payload
The following procedure describes how to configure the RFC 2833 payload using the Web
interface:
To configure RFC 2833 payload using the Web interface:
1. Open the RTP/RTCP Settings page (Configuration tab > VoIP menu > Media >
RTP/RTCP Settings). The relevant parameters are listed under the 'General Settings'
group, as shown below:
Figure 14-4: RFC 2833 Payload Parameters in RTP/RTCP Settings Page
2. Configure the following parameters:
• 'RTP Redundancy Depth' (RTPRedundancyDepth) - enables the device to
generate RFC 2198 redundant packets.
• 'Enable RTP Redundancy Negotiation' (EnableRTPRedundancyNegotiation) -
enables the device to include the RTP redundancy dynamic payload type in the
SDP, according to RFC 2198.
• 'RFC 2833 TX Payload Type' (RFC2833TxPayloadType) - defines the Tx RFC
2833 DTMF relay dynamic payload type.
• 'RFC 2833 RX Payload Type' (RFC2833RxPayloadType) - defines the Rx RFC
2833 DTMF relay dynamic payload type.
• 'RFC 2198 Payload Type' (RFC2198PayloadType) - defines the RTP redundancy
packet payload type according to RFC 2198.
3. Click Submit.
14.3.3 Configuring RTP Base UDP Port
You can configure the range of local UDP ports for RTP, RTCP, and T.38 media streams.
The range of possible UDP ports that can be used, depending on configuration, is 6,000
through to 65,535. The device assigns ports randomly to the traffic within the configured
port range.
For RTCP and T.38 traffic, the port offset from the RTP port used for the voice session is
one and two, respectively. For example, if the voice session uses RTP port 6000, the
RTCP port and T.38 port for the session is 6001 and 6002, respectively. However, you can
configure the device to use the same port for RTP and T.38 packets, by setting the
T38UseRTPPort parameter to 1.
Within the port range, the device allocates the UDP ports in "jumps" (spacing) of 5 (default)
or 10, configured by the UdpPortSpacing parameter. For example, if the port range starts
at 6000 and the UDP port spacing is 10, the available ports include 6000, 6010, 6020,
6030, and so on.
To Next Page
Loading...
