Alcatel-Lucent 1850 User Provisioning Manual page 490

Appendix
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State transition of STMn
Figure 6-20 State transition of STMn
Other Secondary States
SDEE shall be set when supported facilities are created.
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SGEO shall be set when the supporting IOC is OOS for any reason; SGEO shall clear
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FAF while set
ACT or BUSY shall be set when this facility is cross connected
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TRM shall be set if a supported facility is cross connected
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LPBK shall be set if a loopback is present on this facility
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PMI shall be set if performance monitoring is inhibited on this facility
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PSI shall be set if protection switching is locked out
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ROLL shall be set when a facility is engaged in a bridge and roll operation
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WRK shall be set if this is the working facility of a UPSR pair
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STBYH or STBYS shall be set if this is the standby facility in a UPSR or BLSR pair
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Once a time slot (STS1) is provisioned) for STS1 or STSnC, all other potential
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possible facilities (which are now non provisionable) shall be marked UAS&DSBLD.
A facility that is entered with failure will first pass to OOS-MA or IS, then to OOS-
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AU, FAF after the failure integration period, normally 2.5 seconds
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Facility state transitions
8DG08763KAAA
Issue 1 February 2009