Method of enhancing call processing in a number portability...

Details Method of enhancing call processing in a number portability... Method of enhancing call processing in a number portability...

H - Electricity

04

Q

H04Q 3/47 (2006.01) H04Q 3/00 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2237286

A method is provided which reduces post-dial delay in a number portability environment. In particular, a switching office which controls call routing to portable numbers (NPA-NXXs) contains a cache for which location routing number response information may be stored. The processing office concurrently checks the cache for LRN response information corresponding to the dialed number and launches a query to a number portability database. Thus, if the LRN response information in the cache is valid then the call will be routed in the timeliest manner. However, if either the cache does not have any LRN response information or the LRN response information in the cache proves not to be valid then, the switching office will have received the LRN response information from the database more quickly based on the concurrent launching of a query. Therefore, a more timely attempt at establishing a proper connection to the dialed number will occur thereby reducing post-dial delay, regardless of whether or not the dialed number is ported.

L'invention est une méthode qui réduit le temps d'attente après la numérotation dans les environnements à transfert de numéros. En particulier, un central qui contrôle l'acheminement des appels destinés à des numéros transférables (NPA-NXX) contient une antémémoire dans laquelle peut être stockée la réponse du numéro composé. Ce central vérifie en même temps si cette antémémoire contient une réponse correspondant au numéro composé et explore la base de données des numéros transférables. Si l'antémémoire contient une réponse valide, l'appel est acheminé immédiatement. Si l'antémémoire ne contient aucune réponse ou aucune réponse valide, c'est que le central aura déjà reçu obtenu cette réponse en consultant la base de données. La connexion au numéro composé sera donc effectuée plus rapidement, ce qui réduira le temps d'attente après la numérotation, que le numéro composé soit transférable ou non.

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