https://app.knowbase.one/vault/rfc/docid/3157
RFC2846: GSTN Address Element Extensions in E-mail Services
Network Working Group C. Allocchio Request for Comments: 2846 GARR-Italy Category: Standards Track June 2000 GSTN Address Element Extensions in E-mail Services Status of ...
https://app.knowbase.one/vault/rfc/docid/3974
RFC3601: Text String Notation for Dial Sequences and Global Switched Telephone Network (GSTN) / E.164 Addresses
Network Working Group C. Allocchio Request for Comments: 3601 GARR-Italy Category: Standards Track September 2003 Text String Notation for Dial Sequences and Global S...