The OT has detected a Virtual Time Slot Open Connection Indication on an associated
VTS. This condition is raised when the downstream 11DPE12/11DPE12E OT receives an
APS/PCC message indicating an OCI from the upstream OT. The VTSOCI alarm is raised
at the downstream OT on the Virtual Time Slot [
n
] which has an established connection.
Severity Major
Service affecting? Yes
Applicability 11DPE12/11DPE12E
Corrective action
This procedure details the corrective action for clearing the VTOCI alarm associated with
an 11DPE12/11DPE12E port.
...................................................................................................................................................................................................
1
Check the upstream 11DPE12/11DPE12E OT for any alarms/conditions on any VTS[
n
]
with electrical connections. This will cause the OT to send an OCI message for the
relevant VTS[
n
] to the downstream OT. An electrical connection is a provisioned
connection from the VTS[
n
] to a GbE client port or another line VTS. If such an alarm is
present, go to the procedure for clearing OCI alarms to clear the VTSOCI alarm at the
downstream 11DPE12/11DPE12E OT.
WKSWBK
WKSWBK (Automatic switch to working)
WKSWBK indicates an automatic protection switch from the “protection side” to the
“working side”. As a result, the working side becomes the active side. This can occur
when a fault is detected on the protection side, or when the user provisions the protection
side to Admin Down. It applies to all protection schemes (Y-cable, OPS, ESNCP) when
the protection group is non-revertive. (Y-cable can be provisioned to either revertive or
non-revertive. OPS and ESNCP are always non-revertive.)
Severity Not alarmed
Service affecting? No
Applicability 11STAR1, 11STMM10, 11STGE12, 4DPA4, OPS
Trouble-clearing procedures
VTSOCI
VTSOCI (VTS Open Connection Indication)
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1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
2-353
E ND OF STEPS
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