Cisco Cisco Packet Data Gateway (PDG)
S-GW CDR Field Descriptions
▀ CDR Fields
▄ GTPP Interface Administration and Reference, StarOS Release 18
402
Diagnostics
This field is included in the CDR when the bearer context is released and when the option “
gtpp attribute
diagnostics
” is configured. Only the choice of “gsm0408Value” is used.
Format
Choice (gsm0408 only)
Choice (networkSpecificCause only for GTPP custom34 dictionary)
Length
3 bytes
gsm0408Cause
This field is always present when the optional Diagnostics field is included. For more information, refer to
the 3GPP TS 24.008 specification.
the 3GPP TS 24.008 specification.
Some examples:
36: If the MME sends Delete Session Request
38: If S-GW deletes the PDN context request due to echo timeout with P-GW
26: If the S-GW deletes the PDN context request for any other reason
Format
Integer
Length
1 byte
networkSpecificCause (GTPP custom34 Dictionary)
This field is used to report the NAS cause code in the Delete Session message request sent to the S-GW. A
maximum of three network operator-defined cause codes are reported.
maximum of three network operator-defined cause codes are reported.
Important:
In 18.0 and later releases, a new field “abnormalTerminationCause” is added as part of “NAS
management extension” in the Diagnostics field of SGW-CDR for custom34 and custom35 GTPP dictionaries. This
field is populated in the CDR when the cause for record closing is “Abnormal Release”. Also, note that the inclusion of
this field is controlled through the CLI command “
field is populated in the CDR when the cause for record closing is “Abnormal Release”. Also, note that the inclusion of
this field is controlled through the CLI command “
gtpp attribute diagnostics abnormal-release-cause
” in
GTPP group configuration. By default, this trigger is disabled. This trigger is added to indicate the reasons for abnormal
termination of VoLTE bearers.
termination of VoLTE bearers.
Format
Set of Management Extensions
Length
N/A