Introduction
Customers have requirement to log Call Detail Records (CDRs) from Voice over IP (VoIP) systems for accounting or billing purposes. The recommended way to do this is with an external authentication, authorization, and accounting (AAA) server (RADIUS or TACACS). These AAA systems often provide CDR logging, post call record processing, and a billing report generation facility.
This document provides a sample configuration for collecting CDR from Media Gateways in to Realtime database Servers.
Configure
This is enables the Mediagateway to generate CDRs and send them to the AAA Radius/TACACS Server or Syslog Server.
gw-accounting
To enable an accounting method for collecting call detail records (CDRs), use the gw-accounting command in global configuration mode. To disable an accounting method, use the no form of this command.
gw-accounting {aaa | file | syslog [stats] }
no gw-accounting {aaa | file | syslog [stats] }
gw-accounting {h323 [vsa] | syslog | voip}
no gw-accounting {h323 [vsa] | syslog | voip}
Syntax Description
| aaa | Enables accounting through the AAA system and sends call detail records to the RADIUS server in the form of vendor-specific attributes (VSAs). |
| file | Enables the file accounting method to store call detail records in .csv format. |
| syslog | Enables the system logging facility to output accounting information in the form of a system log message. |
| stats | (Optional) Enables voice quality statistics to be sent to the system log. |
| h323 | Enables standard H.323 accounting using Internet Engineering Task Force (IETF) RADIUS attributes. |
| vsa | (Optional) Enables H.323 accounting using RADIUS VSAs. |
| voip | Enables generic gateway-specific accounting. |
Configuration for sending CDR to AAA server (Radius)
Configuration for sending CDR to AAA Server (Radius or TACACS)
router (config) # aaa new-model
!
router (config) #aaa group server radius cdradius
server 192.134.102.90 auth-port 1645 acct-port 1646
!
router (config) #aaa authentication login default none
! -- Enables AAA to prevent Telnet authentication via AAA.
router (config) #aaa accounting connection h323 start-stop group cdradius
! -- Generates the H.323 call start/stop CDRs.
router (config) #aaa session-id common
!
router (config) #gw-accounting aaa
! -- Sends the H.323 CDRs to the AAA Server
router (config) #line vty 0 4
exec-timeout 0 0
password 7 121A0C521104
!
Configuration for sending CDR to Syslog server
There can be some situations where the AAA server is not available, but there is still a requirement for CDR logging. In such a case, it is possible to use the syslog capabilities of the Cisco gateway or router to log VoIPCDRs to an external syslog server. These records are in comma separated variable (CSV) format. They can easily be loaded and processed by an external software application such as a spreadsheet or a database. The syslog server software can run on a basic PC.
router(config)#aaa new−model
!
router(config)#aaa authentication login default none
! -- Enables AAA to prevent Telnet authentication via AAA.
router(config)#aaa accounting connection h323 start−stop radius
! -- Generates the H.323 call start/stop CDRs.
router(config)#gw−accounting syslog
! -- Sends the H.323 CDRs to the syslog server.
router(config)#logging 10.60.2.250
! -- The IP address of the syslog server. Multiple syslog servers can be specified for redundancy.
NTP must run on the Cisco IOS router or gateway to ensure the H.323 start/stop records have the correct time value.
Related Information
This document was generated from the following thread: Collect cdr from cisco gateway AS5300 into a database in realtime
