In this section:
Use this object to specify Real Time Control Protocol (RTCP) options for the call. RTCP is used to report network traffic congestion data. Various actions (for example call disconnect) may be taken when congestion threshold settings are exceeded.
On the SBC main screen, go to Configuration > Profile Management > Category: Media Profiles > Packet Service Profile > RTCP Options.
Select the desired Packet Service Profile from the drop-down list to view its respective RTCP Options parameters.
The RTCP Options window is displayed.
To enable RTCP, click the radio button next to Enable in the Edit RTCP Options window. The appearance of the window changes to the following:
The following fields are displayed:
Except Rtcp, all the parameters described in the table below are visible only when Rtcp is enabled. See Figure 1 and Figure 2 above for the difference.
Parameter | Description |
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Rtcp | Specifies whether RTCP is supported for the call leg. The options are:
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Termination For Passthrough | Specifies RTCP termination behavior for pass-through calls. The options are:
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Enable RTCPFor Held Calls | If this option is enabled, the SBC ignores the configured RR/RS values in the Packet Service Profile and send RR/RS = 0 in the offer/answer and disables RTCP when the call is active. When the call is HELD, and a RE-INVITE is sent, SBC uses the configured values in the Packet Service Profile for RTCP bandwidth and enables RTCP. When the call is RESUMED, SBC again disables RTCP by sending RR/RS=0 in the RE-INVITE. The value of RR ranges from 100-4000 and the value of RS ranges from 100-3000. If this flag is disabled, the older behavior of SBC is applicable. Options are:
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RTCP Mux | When this option is enabled in the ingress or egress Packet Service Profile, RTCP-Mux (RTCP multiplexing) is enabled on the respective call leg of the SBC. This option is disabled by default. This flag is applicable only for SIP Trunk Groups. |
Packet Loss Threshold | Enter a value of 0, or a value in the range of 400-32767 to specify the Packet Loss Threshold (number of lost packets/100,000) which will trigger a Packet Loss Action. This parameter is required if Rtcp is enabled. When set to “0”, no packet loss inactivity detection is performed. The default value is 0. Note
Configuring this parameter to a value less than 400 disables threshold detection, so be sure to use a value in the range of 400 to 32767 to enable threshold detection.
The SBC calculates the packet loss rate as ( For every incoming call leg: This setting can be used in conjunction with Media Peer Inactivity. To set a media peer inactivity timeout value, see the Media Peer Inactivity parameter on the System - Media - Media Peer Inactivity page. For an example configuration of this parameter, see Packet Service Profile - CLI page. |
Rr Bandwidth | Specifies the RTCP bandwidth allocated to active data senders. The value ranges from 100 to 4000 and the default value is 250. |
Rs Bandwidth | Specifies the RTCP bandwidth allocated for receivers. The value ranges from 100 to 3000 and the default value is 250. |
Packet Loss Action | Specifies what Packet loss action to take when packet threshold is exceeded. The options are:
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RTCP Xr | Specifies control of RTCP-XR block processing and statistics collection
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Generate Rtcp For T140 If Not Received From Other Leg | Use this flag to configure specific trunk groups to generate RTCP for text pass-through media streams. This flag can be provisioned if RTCP is "enabled" under rtcpOptions.
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Make the required changes and click Save at the right hand bottom of the panel to save the changes made.