Alcatel-Lucent 1643 AMS - Parameters for Provisioning Output Port Timing

Parameters for provisioning output port timing
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Introduction
The 1.5 Mbit/s, 2 Mbit/s and X.21 transmission ports are managed by a number of
parameters, which are related to timing. These parameters are shown in the functional
diagram below.
Functional diagram
The functional diagram of the Output Port Timing functionality
Acceptance QL
For each individual 1.5 Mbit/s, 2 Mbit/s, or X.21 tributary output port in the Re-Timed
mode, an Acceptance QL can be provisioned.
If the System QL (in case of system timing) or the QL-out (in case of independent
timing) falls below the Acceptance QL, the timing will go into the Fallback mode.
Fallback mode
If a 1.5 Mbit/s, 2 Mbit/s, or X.21 port is operating in the Re-timed mode and if the QL
Mode is enabled, the output is automatically switched to the provisioned Fallback
mode, if the quality level of the system timing drops below the Acceptance QL.
Force DNU Signal Type
Force DNU
Output port
timing process
(SDH output ports)
From
Station Clock
Output
Clock
Distribution
Timing Mode
Fallback Mode
Acceptance QL
Timing Alarm Reporting
Port Timing State
Outgoing QL
Output port
timing process
(2 Mbit/s output ports)
From
Station Clock
Output
Clock
Distribution
Timing provisioning
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365-312-807R7.2
Issue 4, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
7-47