Cisco Cisco Packet Data Interworking Function (PDIF) Guía De Administador
P-GW CDR Field Descriptions
CDR Fields ▀
Cisco ASR 5x00 GTPP Interface Administration and Reference ▄
213
Served MSISDN
The field tracks the Mobile Station (MS) ISDN number (MSISDN) of the subscriber which is transparently copied from the
Create Session Request message.
Create Session Request message.
The MSISDN is TBCD encoded as shown in the example below:3GPP TS 23.003 (CCITT Rec. E 213)
ServedMSISDN ::= OCTET STRING (SIZE(1..9))
subscriber identification MSISDN
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
As per 3GPP TS 29.274 v 8.11.0, “MSISDN value contains only the actual MSISDN number (does not contain the
‘nature of address indicator’ octet, which indicates ‘international number’ as in 3GPP TS 29.002 [37]) and is encoded
as TBCD digits.”
‘nature of address indicator’ octet, which indicates ‘international number’ as in 3GPP TS 29.002 [37]) and is encoded
as TBCD digits.”
To comply with this, octet 1 (nature of address indicator) is not added in the encoded value of MSISDN.