Recommendation ITU-T D.170 sets out the guidelines for preparing the monthly telephone and telex accounts. In particular, it covers the following issues:General remarks on the preparation of accounts;Supply of directories;Accuracy of traffic data in monthly accounts;Estimation of lost accounting records;Traffic sampling;Queries relating to monthly accounts;Adjustments and refunds;Checks of accounting data;Keeping of vouchers;Settlements of accounts.
ITU-T D.170 SPANISH-2010 Referenced Document
ITU-T D.171 Adjustments and Refunds in the International Telephone Service
ITU-T D.195 (Pre-Published) Time-scale for settlement of accounts for international telecommunication services*, 2024-04-19 Update
ITU-T D.170 SPANISH-2010 history
2010ITU-T D.170 SUPP 2-2010 Monthly telephone and telex accounts Supplement 2 – Dispute process guidelines (Study Group 3)