QL-in status
The user can view the status of the incoming quality level (QL-in Status) for each
timing source. The possible values are:
QL-in status Description
Valid The received quality level is in the valid range.
Invalid The received quality level falls outside the valid
range or is unstable.
Not Supported The corresponding input port does not provide
S1-byte extraction.
Not Applicable No reference is assigned to the timing source, or
the assigned signal experiences a reference fail.
QL-out
The QL-out parameter indicates the actual quality level value of the timing source that
is used by the system timing block and the station clock output block. The QL-out
value, is the quality level that enters the system timing and station clock output blocks.
When QL Prov is Auto, QL-out equals QL-in. When QL Prov is not Auto, QL-out
equals QL Prov.
QL prov
The quality level of timing references can be provisioned by the user. The provisioned
quality level is called QL Prov. In case of a timing reference without an S1-byte, QL
Prov allows the user to provision a quality level. When a timing reference does have a
S1-byte (QL-in can be read by the system), this value can be overruled by QL Prov.
Reference
Reference indicates the actual reference that is used for the selected timing source. This
is only applicable if the 1643 AM or 1643 AMS is working in the STM-1 mode or in
the STM-4 mode without the optional STM-1 tributary board present.
Reference fail
When the incoming signal cannot provide a timing reference, the timing reference is
considered to fail. Reference Fail can take the values Yes or No.
Timing provisioning
Parameters for provisioning timing sources
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7-26
Alcatel-Lucent - Proprietary
See notice on first page
365-312-807R7.2
Issue 4, May 2007
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