When equipped with SYSCTL and VLNC50/52/55 circuit packs, and functioning as a network element, Alcatel-Lucent 1850 TSS-5 can synchronize the time and date among all NEs in a network to help correlate events reported by different NEs.
The time and date is synchronized:
Manually using the WaveStar® CIT Administration → Set Date and Time command.
Automatically from another NE via the DCC.
Automatically by the OS
In a new installation, it is recommended that the time and date be manually provisioned in at least the first Alcatel-Lucent 1850 TSS-5 in each ring. Each subsequent Alcatel-Lucent 1850 TSS-5 that is added to the network tries to learn the current time and date from one of the existing NEs automatically.
After start-up (or any subsequent controller resets), the Alcatel-Lucent 1850 TSS-5's time and date revert back to the last time and date before the reset. Alcatel-Lucent 1850 TSS-5 waits 5 minutes, in case other NEs are also resetting (for example, as part of a software upgrade of the network), before starting to check with other NEs for the current time and date. If necessary, the Alcatel-Lucent 1850 TSS-5 checks with all remote NEs for the current time and date.
The Alcatel-Lucent 1850 TSS-5s allow up to 2 minutes for each remote NE to respond before checking with the next remote NE for the current time and date, and keep checking until a valid current time and date is found.
Alcatel-Lucent 1850 TSS-5 accepts a provisioned time and date value or any remote NE date later than 70-01-01 as a valid current time and date.
Network Time Protocol (NTP) assures accurate synchronization of the Alcatel-Lucent 1850 TSS-5 with reference to radio and/or atomic clocks located on the Internet.
The automatic time and date synchronization is intended to achieve time and date synchronization among compatible NEs with DCC connectivity in a network, but such synchronization can not be guaranteed at start-up for all network configurations or over the course of time.
TL1 command responses and autonomous messages include Alcatel-Lucent 1850 TSS-5's current time and date.
Alcatel-Lucent 1850 TSS-5 supports time and date synchronization with the following products:
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