Cisco Cisco IOS Software Release 12.4(4)T
IP SLAs RTP-Based VoIP Operation
Prerequisites for the IP SLAs RTP-Based VoIP Operation
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Cisco IOS Release 12.4(4)T and 12.4(6)T
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Prerequisites for the
IP SLAs RTP-Based VoIP Operation
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Both the source and destination routers must be running Cisco IOS Release 12.4(4)T or later
releases.
releases.
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Both the source and destination routers must be running a Cisco IOS image with the Cisco IOS
IP Voice or higher grade feature package.
IP Voice or higher grade feature package.
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The source router must have a network module with a c5510 or c549 DSP. The destination router
need not have a network module with a DSP.
need not have a network module with a DSP.
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The IP SLAs Responder must be enabled on the destination gateway.
Restrictions for the
IP SLAs RTP-Based VoIP Operation
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The IP SLAs RTP-based VoIP operation gathers statistical information only from the DSP of the
source router.
source router.
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For source-to-destination measurements, the RTP-based VoIP operation does not obtain statistical
information from DSPs.
information from DSPs.
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Depending on the type of DSP, the statistics measured by the IP SLAs RTP-based VoIP operation
will vary. For more information, see the
will vary. For more information, see the
.
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The voice port used by the IP SLAs RTP-based VoIP operation will not be available for other calls.
Information About the
IP SLAs RTP-Based VoIP Operation
To configure an IP SLAs RTP-based VoIP operation, you should understand the following concepts:
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Benefits of the IP SLAs RTP-Based VoIP Operation
The IP SLAs RTP-Based VoIP Operation feature provides the following key benefits:
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End-to-end performance measurements using DSPs for determining voice quality in VoIP networks.
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Proactive threshold violation monitoring through Simple Network Management Protocol (SNMP)
trap notifications and syslog messages.
trap notifications and syslog messages.