Demand test descriptions and error codes - Avaya Support

Stratum 3
TONE-BD (Tone-Clock Circuit Pack)
Since the clock module on the TN2312 does not support synchronization with an external
Stratum-3 clocking device, you may provide Stratum-3 clocking for a S8700 Server system by
using the TN780 Tone-Clock circuit pack in a non-IPSI connected port network. To bring in the
external Stratum-3 clocking signals into the TN780, a processor carrier is needed. This new PN
control carrier will replace the processor carrier in the old Processor Port Network (PPN)
converted to PN 1. The Stratum-3 clocking must come into Port Network #1 because the S8700
Fiber-PNC software has the Stratum-3 clocking hard-coded to this port network.
Stratum 4
With S8700 Fiber-PNC, PN 1 may or may not exist and thus cot be relied on as the backup
synchronization source. If a S8700 Fiber-PNC system does not have an administered
synchronization source, it uses the first PN that comes up as its source. If the designated
master and secondary synchronization sources fail, the system uses any other PN as its
source. No preference is given to PN 1.
Replacing the IPSI or Tone-Clock Circuit Pack
Replacing a TN2312 IPSI circuit pack or Tone-Clock circuit pack is a service-disrupting
procedure in a PN with a single Tone-Clock, because the IPSI or Tone-Clock circuit pack is
always needed to generate clocks for its PN. When the circuit pack is removed, every call is
immediately dropped, the PN enters emergency transfer within one minute, and no calls can be
set up from or to that PN.
However, if the Processor Port Network (PPN) Tone-Clock is removed for replacement in a
Standard Reliability Option system, the System Emergency Transfer feature is activated within
milliseconds, and the entire system is disrupted; no calls can be placed, and existing calls are
dropped.
However, if the Processor Port Network (PPN) Tone-Clock is removed for replacement in a
standard-reliability system, the System Emergency Transfer feature is activated within
milliseconds, and the entire system is disrupted; no calls can be placed, and existing calls are
dropped.
When replacing an IPSI or Tone-Clock circuit pack, always be sure to replace it with the
appropriate IPSI or Tone-Clock circuit pack for the system.
Issue 5 May 2009 997