About this document
GSM Codes for Call Forwarding & Barring by Azhar Hassan is a document available to read on EtoBox.
This document provides standard GSM codes for activating, deactivating, and checking various network services. It lists codes for call forwarding, call barring, call waiting, and calling line identity functions. The codes use prefixes like *21* and #21# followed by numbers or additional codes to indicate the specific service and parameters like a forwarding number.
- Author
- Azhar Hassan
- Language
- EN