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Efficient Overflow and High Usage Options for Improved Traffic Routing

Explore principles of route dimensioning and operational interventions to manage overflow and high usage scenarios effectively. Learn about proposed changes, limitations, and rules for optimizing call routing. Enhance call success and service quality.

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Efficient Overflow and High Usage Options for Improved Traffic Routing

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  1. Overflow and High Usage Options • Current position - Overflow • Principle for Route Dimensioning is that all Traffic Routes be fully provided. • Overflow allowed between fully provided Traffic Routes i.e where an Operator has more than one Traffic Route to a BT Switch then they can request calls to overflow between them. • No restrictions on how “own” traffic is carried in owning party’s network.

  2. Overflow and High Usage Options • Current position - Overflow post NTS Links Reversal. • Fully Provided requirement (Annex A par. 5.4.2) applies to this traffic type. • Therefore, Overflow from Switch Connections for BT-Operator NTS is limited to Operator Traffic Routes from that Switch Connection only (but see DLEs).

  3. Overflow and High Usage Options • Current position - Manual Operational Intervention. • In the case of operational difficulties, Operations departments may agree expedient re-routing for a limited time using any available capacity. • Increase the likelihood of successful Calls • Only where this does not affect the GOS of other services.

  4. Overflow and High Usage Options • Proposed Changes - Overflow from DLEs • Recognising the growth in DLE connection BT has been looking at the possibility of making overflow available via the tandem layer where Calls temporarily exceed available Capacity. • Principle of Fully Provided Routes still applies therefore this would only be used as a temporary measure pending Route Augmentation. • Reflecting changes in types of Calls we have looked at the following scenarios :-

  5. Overflow and High Usage Options • Proposed Changes - Overflow from DLEs • Voice - overflow will be made available for voice services number ranges in accordance with agreed routing plan if requested. • Data - no overflow can be made available for these number ranges due to factors such as aggressive redial characteristics. This covers calls to the internet including VOIP. • Mixed number ranges - where a voice number range is contaminated by data services then no overflow facility will be available. • Contract text will be amended to allow this.

  6. Overflow and High Usage Options • High Usage Rules - • Available for traffic to BT DLEs from an Operators Network or to Operator Local exchanges from the BT Network only. - Annex A par. 5.3.3 • Limited HU option that was made available for Surftime type services no longer available.

  7. Overflow and High Usage Options • Any Questions ?

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