> For the complete documentation index, see [llms.txt](https://docs.colt.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.colt.net/customer-comms.md).

# CUSTOMER COMMS

- [CUSTOMER ADVISORY NOTIFICATION](https://docs.colt.net/customer-comms/customer-advisory-notification.md): Download the full advisory below: Spain – Introduction of “400” Number Range for Commercial Outbound Calls (Enterprise Customers)
- [LEGAL ENTITY CONSOLIDATION](https://docs.colt.net/customer-comms/legal-entity-consolidation.md)
- [CONTRACT UPDATE (LUMEN TECHNOLOGIES DENMARK ApS)](https://docs.colt.net/customer-comms/legal-entity-consolidation/contract-update-lumen-technologies-denmark-aps.md): The full letter is available below for your reference.
- [CONTRACT UPDATE (LUMEN TECHNOLOGIES ITALIA s.r.l.)](https://docs.colt.net/customer-comms/legal-entity-consolidation/contract-update-lumen-technologies-italia-s.r.l..md): The full letter is available below for your reference.
- [CONTRACT UPDATE (CENTURYLINK COMMUNICATIONS SWEDEN AB)](https://docs.colt.net/customer-comms/legal-entity-consolidation/contract-update-centurylink-communications-sweden-ab.md): The full letter is available below for your reference.
- [CONTRACT UPDATE (LUMEN TECHNOLOGIES SWITZERLAND AG)](https://docs.colt.net/customer-comms/legal-entity-consolidation/contract-update-lumen-technologies-switzerland-ag.md): The full letter is available below for your reference.
- [CONTRACT UPDATE (LUMEN TECHNOLOGIES BELGIUM S.A.)](https://docs.colt.net/customer-comms/legal-entity-consolidation/contract-update-lumen-technologies-belgium-s.a..md): The full letter is available below for your reference.
- [CONTRACT UPDATE (LUMEN TECHNOLOGIES ROMANIA S.R.L.)](https://docs.colt.net/customer-comms/legal-entity-consolidation/contract-update-lumen-technologies-romania-s.r.l..md): The full letter is available below for your reference.
- [Legal entity integration schedule by country](https://docs.colt.net/customer-comms/legal-entity-integration-schedule-by-country.md): This table sets out the planned legal entity integrations by country, including the target dates.
- [Customer Transition Handbook](https://docs.colt.net/customer-comms/customer-transition-handbook.md): Planned Work Notification Example page
- [CUSTOMER POWER DOWN MAINTENANCE NOTIFICATION](https://docs.colt.net/customer-comms/customer-transition-handbook/customer-power-down-maintenance-notification.md)
- [THIRD PARTY MAINTENANCE NOTIFICATION](https://docs.colt.net/customer-comms/customer-transition-handbook/third-party-maintenance-notification.md)
- [MAINTENANCE ALERT](https://docs.colt.net/customer-comms/customer-transition-handbook/maintenance-alert.md)
- [DIRECT DEBIT BILLING](https://docs.colt.net/customer-comms/direct-debit-billing.md)
- [BELGIUM DIRECT DEBIT MANDATE](https://docs.colt.net/customer-comms/direct-debit-billing/belgium-direct-debit-mandate.md): If you’d like to move to Direct Debit billing, simply download, complete, and return the Direct Debit mandate to EMEAcollections@highradius.colt.net, and we’ll take care of the setup for you.
- [FRANCE DIRECT DEBIT MANDATE](https://docs.colt.net/customer-comms/direct-debit-billing/france-direct-debit-mandate.md): If you’d like to move to Direct Debit billing, simply download, complete, and return the Direct Debit mandate to EMEAcollections@highradius.colt.net, and we’ll take care of the setup for you.
- [GERMANY DIRECT DEBIT MANDATE](https://docs.colt.net/customer-comms/direct-debit-billing/germany-direct-debit-mandate.md): If you’d like to move to Direct Debit billing, simply download, complete, and return the Direct Debit mandate to EMEAcollections@highradius.colt.net, and we’ll take care of the setup for you.
- [NETHERLANDS DIRECT DEBIT MANDATE](https://docs.colt.net/customer-comms/direct-debit-billing/netherlands-direct-debit-mandate.md): If you’d like to move to Direct Debit billing, simply download, complete, and return the Direct Debit mandate to EMEAcollections@highradius.colt.net, and we’ll take care of the setup for you.
- [UK LTD DIRECT DEBIT MANDATE](https://docs.colt.net/customer-comms/direct-debit-billing/uk-ltd-direct-debit-mandate.md): If you’d like to move to Direct Debit billing, simply download, complete, and return the Direct Debit mandate to EMEAcollections@highradius.colt.net, and we’ll take care of the setup for you.
- [EUROPE LTD DIRECT DEBIT MANDATE](https://docs.colt.net/customer-comms/direct-debit-billing/europe-ltd-direct-debit-mandate.md): If you’d like to move to Direct Debit billing, simply download, complete, and return the Direct Debit mandate to EMEAcollections@highradius.colt.net, and we’ll take care of the setup for you.
- [CAB CUSTOMER INSIGHTS](https://docs.colt.net/customer-comms/cab-customer-insights.md)
- [QUANTUM SECURE NETWORKING](https://docs.colt.net/customer-comms/cab-customer-insights/quantum-secure-networking.md)
- [BRANDED CALLING IN EUROPE](https://docs.colt.net/customer-comms/branded-calling-in-europe.md): CUSTOMER ADVISORY NOTIFICATION