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Contract

Changement de fournisseur de fibre

Passer d'un fournisseur de collaboration fibre optique de gros NTT à un autre tout en réutilisant normalement la même ligne d'accès fibre.

Demandez un numéro d'autorisation de changement de fournisseur au fournisseur actuel et donnez-le au nouveau fournisseur avant son expiration. Le switch est principalement contractuel, mais les transferts d'options, les numéros de téléphone IP, les routeurs et les paramètres IPv6 nécessitent une confirmation.

N'annulez pas d'abord l'ancienne fibre de manière indépendante, sauf indication contraire : cela peut transformer un changement de fournisseur en une nouvelle installation et créer des temps d'arrêt. Confirmez la date de modification, l'ancienne facture finale, les nouveaux frais initiaux et tous les services qui ne bougent pas automatiquement.

Dictionary

Related guides

Cancellation / early-termination feekeiyaku kaijo-ryō / kaiyaku-ryō
A charge that may apply when a newly opened line is cancelled within a defined period (often 12 months). Rules differ by plan and contract start date; device installments, options and same-month cancellation charges are separate.
Carrier emailkyaria mēru
An email address given by a mobile carrier, such as @docomo.ne.jp, @au.com / @ezweb.ne.jp or @softbank.ne.jp.
Contract changekeiyaku henkō
A broad term for changing the details of an existing contract — plan, options, name, or payment method.
Device upgradekishu henkō
Getting a new device while staying with your carrier and keeping your number.
Remise sous tension électrique / saitensaiten
Rendre l'électricité utilisable à nouveau sur un point de fourniture qui a été arrêté, généralement dans le cadre d'un nouveau contrat d'emménagement.

Sources

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The information here is shared in good faith but may be incomplete, out of date or wrong. Use it at your own risk: no responsibility or compensation is accepted for any loss, cost or disadvantage arising from this content or from anything done based on it. Always confirm with the official source — and, where it matters, a qualified professional — before you decide.

Plan names, prices and conditions were checked against the linked official sources as of 2026-08-29 (JST). Terms can change; confirm the official page before applying.

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