5 Maintenance

This chapter explains Acme Packet 4900 hardware maintenance procedures.

Although several user-replaceable components of the Acme Packet 4900 are hot-swappable, some limited Acme Packet 4900 maintenance procedures require that you shut down the system.

Examples of maintenance procedures which require you to shut down the unit include:
  • Removing the unit from the equipment rack for any reason
  • Removing the cover from the chassis
  • Replacing transcoder DSP modules
  • Replacing the T1/E1 TDM card.
General caveats for Acme Packet 4900 maintenance:
  • Always observe correct ESD procedures.
  • Before you start any maintenance procedure which includes parts replacement, make sure you have the correct part on-hand. Any user-replaceable components may be ordered in advance from Oracle.
  • Oracle recommends stocking replacement parts for:
    • Air filters
    • Fans
    • Power supplies
    • Optical transceivers
    • TCM modules