ITU-T H.248.87
Gateway control protocol: Guidelines on the use of ITU-T H.248 capabilities for performance monitoring in RTP networks in ITU-T H.248 profiles
Organization: | ITU-T |
Publication Date: | 1 January 2014 |
Status: | active |
Page Count: | 60 |
scope:
The scope of this Recommendation covers performance monitoring
in RTP networks with the involvement of ITU-T H.248 entities.
Performance monitoring as such is a network service across multiple
network entities which are located in user, control and/or
management planes. The scope of this Recommendation is limited to
the user/control/managem
Performance monitoring could be considered as a network overlay function.
This Recommendation provides:
- an overview of the existing "entire ITU-T H.248 toolkit" for RTCP extended report (XR) support, i.e., the set of available ITU-T H.248 packages in that area
- an overview of available ITU-T H.248 packages for non-XR related performance metrics, typically subject to RTCP basic report (SR, RR) capabilities
- example network use cases with different ITU-T H.248 MG types (primarily physical-to- RTP gateways, media-agnostic IP-to-IP gateways, RTP-topology-aware RTP-to-RTP gateways)
- a collection of functional requirements in order to motivate associated profile guidelines
- a classification of performance metrics (such as application-level versus transport-level metrics) in order to indicate applicability or not for ITU-T H.248 MGs
- the following principal ITU-T H.248 MG tasks:
○ measurement of RTP traffic
○ reporting of measurement data via RTCP XR reports
○ collection of RTCP XR carried measurement data
○ loopback of RTP (in order to relocate a measurement point)
○ filtering of RTCP XR reports ○ modification of RTCP XR reports and/or reporting of measurement data via ITU-T H.248 statistics to the MGC
○ control of such tasks via [ITU-T H.248] that could be addressed in an ITU-T H.248 profile, i.e.,
• the identification of appropriate ITU-T H.248 packages
• the detailed specification of package usage
• the example call-dependent procedures
- the association to other related ITU-T H.248.x Recommendations such as [ITU-T H.248.71], [ITU-T H.248.79], [ITU-T H.248.85] and [b-ITU-T H.248.88]
- control of measurement methods (such as interval, cumulative and alert type of measurements)
- usage of ITU-T H.248.47-based conditional reporting [ITU-T H.248.47].
This Recommendation also discusses the purpose of performance monitoring (and therefore the possible motivation of a use case). For example:
- capture of grade-of-service (GoS) related data in order to evaluate network conditions
- capture of quality of service (QoS) and quality of experience (QoE) related data in order to evaluate service conditions (e.g., as part of service level agreements)
- capture of billing/charging related data
- capture of data as input for routing algorithms
- capture of data as input for network node selection algorithms
- capture of data as input for centralized servers as support of network operations
- capture of data as part of online tests.
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