Restrictions - Cisco ASR 1000 Series Software Configuration Manual
Aggregation services routers sip and spa, cisco ios xe everest 16.5
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Also See for ASR 1000 Series:
- Configuration manual (442 pages) ,
- Replacing (120 pages) ,
- Common criteria operational user guidance and preparative procedures (72 pages)
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Restrictions
• End of participation (BYE): A source sends a BYE message to shut down a stream. It allows an end
• Application-Specific message (APP): The application-specific message provides a mechanism by which
Restrictions
The restrictions for implementing the RTCP service on the SPA-DSP in Cisco IOS XE Release 3.4.0S are:
• The length of the CNAME in the RTCP packets sent by endpoints should not exceed 40 bytes.
• If one endpoint does not send the RTP packets, the SPA-DSP neither generates the RTCP packets nor
Terminating and Generating the RTCP by the SPA-DSP
The termination and generation of the RTCP is done by the SPA-DSP. From Cisco IOS XE Release 3.4.0S
onwards, the SPA-DSP can terminate and generate the RTCP data. When the RTCP Termination and Generation
feature is configured using the rtcp-regenerate command, and if a transcoding-based call is established, the
appropriate control signals are sent to the SPA-DSP to generate and terminate the RTCP.
When the SPA-DSP receives the RTCP packet, it processes the packet and effectively terminates it. The
SPA-DSP then generates new RTCP packet for transmission, and populates them with the appropriate RTCP
content based on the associated stream till the current date. The RTCP packets that are generated include
sender and receiver reports, and SDES packets (only CNAME is supported currently). For information
regarding the configuration procedure, refer to the "Configuring the RTCP on the SPA-DSP" section in the
Configuring the Cisco DSP SPA for the ASR 1000 Series Aggregation Services Routers chapter.
Supported MIBs
The following MIBs are supported in Cisco IOS XE Release 3.2 for the DSP SPA on Cisco ASR 1000 Series
Routers:
Common MIBs
• ENTITY-MIB
• ENTITY-SENSOR-MIB
Cisco-Specific Common MIBs
• CISCO-DSP-MGMT-MIB
• OLD-CISCO-CHASSIS-MIB
• CISCO-ENTITY-FRU-CONTROL-MIB
• CISCO-ENTITY-SENSOR-MIB
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS
XE Everest 16.5
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point to announce that it is leaving the conference. Although, other sources can detect the absence of a
source, this message is a direct announcement. It is also useful to a media mixer.
to design application-specific extensions for the RTCP.
sends the RTCP packets to the other side.
Overview of the Cisco DSP SPA for the ASR 1000 Series Aggregation Services Routers
OL-14127-17
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