GTPP Storage Server Overview  
▄ Cisco ASR 5000 Series Product Overview 
  EoF marker: \n 
  File name format: 
GSN_  
GSN_  
  custom1 Format: This file format encodes CDRs according to the starent file format explained above. 
Important:  The use of either starent or custom1 file formats, imposes a few specific reactions: - files are 
generated without an extension; acknowledged and unacknowledged files are differentiated by their file names; the 
system deletes all the files after reaching the maximum storage period (1-7 days) configured during GSS configuration. 
 
  custom2 Format: This customer-specific file format encodes CDRs according to the following conventions: 
  Header: 24 byte header incorporating the following information: 
 
Offset from EoH to first Unread CDR (4 Bytes) 
Basic Encoding Rule (BER) i.e. 1 (4 Bytes) 
Total number of CDRs in the file (4 Bytes) 
Total number of read CDRs in the file (4 Bytes) 
Size of CDR file in bytes (4 Bytes) 
Abstract Syntax Notation One (ASN.1) format definition version 
ASN.1 definition version information (4 Bytes) 
 
 
  Contents:   
  EoF marker: No EoF marker 
  File name format: 
GSN_  
 
  custom3 Format: This customer-specific file format encodes CDRs according to the following conventions: 
  Header: No header 
  Contents:  …  
  EoF marker: No EoF marker 
  File name format: 
GSN_  
Important:  The use of either custom2 or custom3 file formats imposes the following actions: - files are 
generated with the .u file extension (indicating an unprocessed file to the billing system); - the GSS system deletes files 
with .p extension as part of periodic clean-up.