Avaya S8700 Maintenance Manual page 2141

For multi-connect configurations

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SNC-BD (Switch Node Clock Circuit Pack)

Switch Node Clock Reset Test (#780)

This test is destructive.

This test resets the SNC circuit pack via the reset board UUCSS command when

an SNC circuit pack location is entered. If the system has PNC duplication, the

active SNC on the active PNC cannot be reset.

If the SNC is active and the reset board command is executed, an SNI in the

same carrier as the SNC will be told by software to reset the SNC via the TPN

link. If no inserted SNIs in the same carrier as the SNC can successfully reset the

SNC, software will send a "reset" message directly to the SNC. Software first tries

to reset the SNC via an SNI in case the SNC is insane because the latter method

(sending the "reset" message directly to the SNC) will not work if the SNC is

If an active SNC is reset and a standby SNC exists in the same switch node

carrier, the standby SNC will become active. The reset board command should

not be used to make a standby SNC active. Instead, the set switch-node-clock

UUCSS command should be used.

If the SNC is standby and the reset board command is executed, the active SNC

is told by software to reset the standby SNC via the TPN link.

An SNC should be reset instead of reseating the circuit pack. The reset board

command should almost never be used on an SNC. It may be necessary to use

the reset board command if the SNC circuit pack gets into a mode where it

cannot communicate with software.

Table 8-572. TEST #780 Switch Node Clock Reset Test

Description / Recommendation

Could not allocate the necessary system resources to run this test.