Cisco Cisco Packet Data Gateway (PDG)
P-GW CDR Field Descriptions
▀ CDR Fields
▄ GTPP Interface Administration and Reference, StarOS Release 16
220
hSGW (4),
mME (5)
}
Format
Sequence of serving Node Type
Length
3-48; variable length format (based on number of nodes connected during this period)
Start Time
This field contains the time when the User IP-CAN session starts at the P-GW, available in the CDR for the first bearer in an
IP-CAN session.
IP-CAN session.
In releases prior to 14.0, for P-GW service, the “startTime” attribute is added only to the first CDR of the default
bearer of the IP-CAN session. In this case, if the first CDR was lost, the start time of the session remained unknown.
Releases beyond 14.0, the “startTime” attribute is present in every PGW-CDR of the default bearer. Hence, if for any
reason the first CDR is lost, the start time of the session can still be retrieved through the subsequent PGW-CDRs.
bearer of the IP-CAN session. In this case, if the first CDR was lost, the start time of the session remained unknown.
Releases beyond 14.0, the “startTime” attribute is present in every PGW-CDR of the default bearer. Hence, if for any
reason the first CDR is lost, the start time of the session can still be retrieved through the subsequent PGW-CDRs.
The timestamp is determined based on the internal timer which has an accuracy of 10ms. Depending on the
configured mechanism this is translated into the timestamp which only shows the full seconds.
configured mechanism this is translated into the timestamp which only shows the full seconds.
The format is shown below.
TimeStamp ::= OCTET STRING (SIZE(6))
The contents of this field are a compact form of the UTC Time format containing local time plus an offset to
universal time. Binary coded decimal encoding is employed for the digits to reduce the storage and transmission
overhead.
universal time. Binary coded decimal encoding is employed for the digits to reduce the storage and transmission
overhead.
For example: YYMMDDhhmmssShhmm
Format Variable Meaning
Encoding Format
YY
Year 00 to 99
BCD encoded
MM
Month 01 to 12
BCD encoded
DD
Day 01 to 31
BCD encoded
hh
Hour 00 to 23
BCD encoded
mm
Minute 00 to 59
BCD encoded
ss
Second 00 to 59
BCD encoded
S
Sign 0 = “+”, “-” ASCII encoded
hh
Hour 00 to 23
BCD encoded
mm
Minute 00 to 59
BCD encoded
Format
BCD encoded octet string
Length