Fixed Sender ID
Fixed Sender ID is a fixed numeral sender identification the mobile number that is displayed on the recipient’s phone screen. Fixed Sender ID cannot be adjusted according to user needs and keeps in terms with the ITU Telecommunication Standardization Sectorstandard with MSISDN format that recommends limits the maximum length of an MSISDN to 15 digits.
1-3 digits are restrained for country code with prefixes not contained.
ITU Telecommunication Standardization Sector does not define minimum length of the MSISDN but is instead itemized in the national numbering plans by the telecommunications regulator in every state.