TONE-BD (Tone-Clock Circuit)
Issue 1 May 2002
8-1675555-233-143
l. Error Type 2561This error indicates that a Tone-Clock circuit pack, with
a different circuit-pack code as required for this system, has been inserted
in the port slot as shown in the Hardware Error Log. To resolve this error,
see ‘‘Replacing the IPSI or Tone-Clock Circuit Pack’’ for an appropriate
circuit pack code and replace the Tone-Clock circuit pack according to the
procedures indicated for this system. The meanings of the aux data values
are as follows:
m. Error Type 3329
The system attempted but failed to interchange IPSI or
Tone-Clock circuit packs. (This error occurs only in port networks with
duplicated Tone-Clocks.) The fault may lie in the standby Tone-Clock or in
the circuit pack that controls selection of the active Tone-Clock (the t/c
selector). The goal of the following procedure is to ensure that both
Tone-Clocks can be interchanged to while either t/c-selector circuit pack is
active.
1. Examine the Error Log for errors reported against circuit packs in
the same port network, paying special attention to TDM-CLK,
TONE-BD, DUPINT, SW-CTL, and EXP-INTF. Follow the
procedures indicated for any such errors found. After eliminating
the above potential problem sources, proceed with the following
steps.
2. Determine which circuit pack was controlling the choice of
Tone-Clock at the time the error occurred.
■ For an EPN, the t/c selector is the active EXP-INTF circuit
pack that is connected to the active PN. This is EXP-INTF
2A01 or 2B02 for EPN1 and 3A01 or 3B02 for EPN2.
The t/c-selector circuit pack of interest is the one which was active at
the time the error was logged. An EXP-LNK interchange since the
time of the error may have made that circuit pack the current
standby. Determine whether an interchange affecting the t/c
selector has occurred since the TONE-BD error. When investigation
an EPN Tone-Clock, look for EXP-LNK entries in the hardware error
log for PNC interchanges, which would affect the EXP-INTF.
1002 A TN756 Tone-Clock circuit pack (instead of a TN2312) is in a
duplex-reliability system’s EPN.
1003 Either a TN741, TN714, TN768, TN780, or TN2182 Tone-Clock circuit
pack (instead of a TN2312 IPSI) is in a duplex-reliability system’s EPN.
1004 Either a TN741 or TN714 Tone-Clock circuit pack (instead of a TN768,
TN780, TN2182, or TN2312) is in a high- or critical-reliability system’s
EPN.
1005 Same as for aux value 1004.
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