In this section:
This best practice provides guidance on configuring RTCP RR/RS Bandwidth modifiers from EMA to support held calls for a Multimedia Telephony Service for IMS (MTSI) environment as described on the page AMR and RTCP Enhancements..
This configuration is performed either on ePSX/PSX or on SBC ERE. For ePSX configuration, ensure you have the correct version of ePSX installed on SBC.
Additionally, the ePSX configuration can only be performed through SBC EMA. For additional ePSX configuration details via EMA, see Call Routing: System Provisioning - ePSX.
Execute the following command to configure PSP:
% set profiles media packetServiceProfile DEFAULT rtcpOptions rtcp enable
Execute the following command to configure the HELD calls:
% set profiles media packetServiceProfile DEFAULT rtcpOptions rtcp enable enableRTCPForHeldCalls enable
Execute the following command to configure RR and RS bandwidth values:
% set profiles media packetServiceProfile DEFAULT rtcpOptions rtcp enable enableRTCPForHeldCalls enable rrBandwidth 250 rsBandwidth 250
Execute the following command to send the RR and RS bandwidth information in the SDP offer:
% set profiles signaling ipSignalingProfile DEFAULT_SIP commonIpAttributes flags sendRTCPBandwidthInfo enable
On the SBC EMA main screen, navigate to Configuration > System Provisioning > Category: Call Routing > E PSX. The PSX manager window is displayed.
In the PSX Manager window, choose Packet Service Profile from the fourth drop-down menu.
To create Packet Service Profile, right click on the Selection Area.
The Packet Service Profile window appears. Provide the Packet Service Profile name.
Choose the RTCP option to enable it. This action enables the RTCP configurable flags.
The following parameters are displayed:
All available parameters require RTCP to be enabled.
Make the desired changes to these parameters.
Click Save to save the configuration.
On the SBC EMA main screen, navigate to Configuration > System Provisioning > Category: Call Routing > E PSX. The PSX manager window is displayed.
In the PSX Manager window, choose IP Signaling Profile from the fourth drop-down menu.
To create IP Signaling Profile, right click on the Selection Area.
The IP Signaling Profile window appears. Provide the IP Signaling Profile name.
Enable the "Send RTCP Bandwidth Info" flag identified in the screen capture below:
The following flag is now enabled: