Platform · NRSA
Routing by quality
and cost.
NRSA — Network Routeing Scheme Assignment — is the routing engine we built ourselves. For every destination, it ranks every supplier by a Total Quality Indicator computed from live traffic, and writes that order to the switch, prefix by prefix.
- ASRAnswer-seizure ratio
- NERNetwork effectiveness
- ACDAverage call duration
- PDDPost-dial delay
- RateCost of the destination
Indicator
- 1Supplier route A92
- 2Supplier route B84
- 3Supplier route C71
- 4Supplier route D58
Total Quality Indicator
Five inputs. One score.
A route is not good because it is cheap, nor because it answers. It is good when what it delivers is worth what it costs. The TQI puts both in one figure.
ASR
Answer-seizure ratio
NER
Network effectiveness
ACD
Average call duration
PDD
Post-dial delay
Cost
The rate of the destination
Other parameters of a route's behaviour are measured alongside. How the inputs are weighted is our own, and is not published.
Read every figure over a stated period and a meaningful sample. A low-volume route may not yet support the same conclusions as a well-observed one. ASR and NER terminology is described in ITU-T E.425; operational comparisons also need an agreed population and release-cause classification.
Measurement windows
One hour to four days.
A sudden failure shows in the last hour before it shows in the day. A slow drift shows over days before any single hour looks wrong. NRSA keeps both in view.
- 1 h
- 2 h
- 4 h
- 12 h
- 24 h
- 96 h
- CCCountry
- CC NFixed network
- CC 7Mobile networks
- CC 76One mobile operator's rangeRanking applied
Prefix precision
Precision by prefix.
A mobile range inside a country is ranked on its own traffic, not on the country's average. When several prefixes match a number, the longest one's ranking applies.
How it runs
From measurement to the switch.
What NRSA does
- Collects answered and failed calls for every supplier on every destination, over each window.
- Scores each supplier with its Total Quality Indicator. Routes with enough traffic to measure are scored on their own figures; the others use configured defaults until enough measurements are available.
- Ranks suppliers prefix by prefix, most specific prefix first.
- Writes the order to the switch, and does it again as the traffic changes.
What it means for your traffic
- Updated measurements inform the ranking alongside configured route policies and overrides.
- A dearer route that holds its numbers can rise above a cheaper one that does not.
- The order follows live traffic, not a spreadsheet updated once a month.
- CLI and NCLI routes are ranked as what they are, never swapped to widen a margin.
Next step
Test the route.
Tell us the destinations and volumes you want to move. We can discuss a rate sheet per prefix and a test window, with NRSA ranking based on measured traffic or configured defaults.