Form s15 international 2026

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Form S15 is an application form for obtaining International Signalling Point Codes (ISPCs) used in Public Electronic Communications Networks, specifically within the UK C7 network. The document outlines the purpose of ISPCs as unique identifiers for switches in international gateway exchanges, details the structure of ISPCs, and provides instructions for applicants regarding required information and eligibility criteria. It includes sections for applicant details, justification for multiple ISPC requests, overseas interconnection arrangements, and confirmation of status as a provider of public electronic communications services or networks.

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Click ‘Get Form’ to open it in the editor.
Begin by entering your reference number (optional) at the top of the form.
Fill in your applicant details, including your name, company name, address, and contact information. If acting on behalf of a Communications Provider, attach a letter of authorization.
Provide details for the Communications Provider if different from your own. This includes their name and address.
Complete the declaration section regarding your Public Electronic Communications Network status. Ensure you have submitted any required information in Annex A.
List the ISPCs required by providing details for each switch, including its type and location. Justify any requests for multiple ISPCs on the same switch.
Confirm overseas interconnection arrangements for each ISPC applied for, ensuring compliance with UK network requirements.
If applicable, provide justifications for adopting existing Telephone Numbers and list any previously allocated ISPCs.

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