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ITU-T E.152 (05/2006)

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International freephone service
Experience with the International Freephone Service has shown that carriers have developed their own service order forms that are different to Annexes A, B, C and D of the existing Recommendation. Consequently, the service order forms have been amended to better suit the actual need for information exchange between carriers. In addition, a global change has been made to ensure that the use of terms and definitions are consistent throughout the Recommendation.
Citation: https://handle.itu.int/11.1002/1000/8729
Series title: E series: Overall network operation, telephone service, service operation and human factors
  E.100-E.229: International operation
  E.140-E.159: Operation of international telephone services
Approval date: 2006-05-11
Approval process:TAP
Status: In force
Maintenance responsibility: ITU-T Study Group 2
Further details: Patent statement(s)
Development history