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PRI-CDR (Call Detail Recording Link)
Issue 1 June 2005 1905
PRI-CDR (Call Detail Recording Link)
S8700 | 8710 / S8500
The CDR feature records detailed call information about every incoming and outgoing call on
specified trunk groups and sends this information to a CDR output device. The two physical
links can be administered for connecting external CDR output devices to the system. They are
identified as the primary CDR (PRI-CDR) link and the secondary CDR (SEC-CDR) link. The
CDR device connects to the system via a data module (PDM, MPDM, DTDM) connected to a
port on a TN754 Digital Line circuit pack that is administered as a data extension. A CDR device
can also be connected through an ADU to a port on TN726B. The CDR link to the processor is
through a C-LAN board. For information about C-LAN port connectivity, see CLAN-BD (Control
LAN Circuit Pack) on page 789. External CDR output devices include:
● 94A Local Storage Unit (LSU)
● TELESEER CDR Unit
● Call Accounting System (CAS)
● Call Detail Recording Unit (CDRU)
● Printer
● Host computer
● Personal computer (PC)
● Customer-provided equipment
CDR Link Maintenance provides a strategy for maintaining the link between the system and an
external CDR output device. The strategy includes a set of tests for periodic diagnosis,
detection of errors during normal operation, actions for troubleshooting, and raising alarms for
serious problems. CDR Link Maintenance uses a try-and-wait mechanism for maintaining the
CDR link. If the CDR link is torn down due to an error, CDR Link Maintenance tries to bring the
CDR link up. If the Link Setup fails, CDR Link Maintenance will wait for 30 seconds before the
next retry. If the number of retries reaches a threshold (two), a Minor alarm is raised for service
attention.
MO Name in Alarm
Log
Alarm
Level
Initial SAT Command to Run Full Name of MO
PRI-CDR/SEC-CDR MIN test cdr primary |
secondary l
CDR Link
PRI-CDR/SEC-CDR WRN test cdr primary |
secondary
CDR Link