Cisco Cisco Packet Data Interworking Function (PDIF)

 

octet 1 : bit 8 (msb): extension bit 

= 1 : no extension 

other : not relevant 

 

bit 7..5 : type of number 

= 000 : unknown 

= 001 : international number 

= 010 : national significant number 

= 011 : network specific number 

= 100 : subscriber number 

= 101 : reserved 

= 110 : abbreviated number 

= 111 : reserved for extension 

 

bit 4..1 : numbering plan indicator 

= 0001: ISDN/Telephony Numbering Plan (Rec CCITT E.164) 

other : not relevant 

 

octet 2..9: <= 16 digits TBCD-String (twisted) 

substructure (without spares or fillers): 

1..3 digits - country code (CC) 

(only international number) 

3 digits - national destination code (NDC) 

<= 10 digits - subscriber number (SN) 

first and intermediate octet = 2 digits 

last octet = 2 digits or 1 digit + 1 fill digit H'F 

 

example: 

MSISDN: '<internat #><E.164>491720400305'