User's Manual

Avaya Branch Gateway Manager 10.0 Page 702
15-601011 Issue 29r (Friday, November 02, 2012)B5800 Branch Gateway
9.1 Date and Time
The control unit contains a battery backed clock which is used to maintain system time during normal operation and
when mains power is removed.
For files stored on memory cards the system uses the UTC time. For other activities such as call logs, SMDR records, time
display on phones; the local time (UTC + any offsets) is used.
The time can be set in a number of ways list below. The method used is set through the Time Server IP Address or
Time Setting Config Source settings on the System | System form.
· Simple Network Time Protocol (SNTP - RFC4330)
SNTP can be used to make time requests to a list of NTP servers. The response is just a UTC time value, therefore
the system has to be configured with the required offset for the local time value and also optional daylight savings
values. The time request is sent when the system is started and every hour afterwards.
· Standalone Voice Mail/Manager (TIME RFC868)
Both the Standalone Voice Mail service and the Branch Gateway Manager application can act as RF868 time
servers, obtaining the time for the PC on which they are running. Use of other RFC868 server sources is not
supported. In response to a request from a system, they will provide both the UTC time and local PC time. The
time request is sent when the system is started and every 8 hours afterwards.
· If you are running Manager when the Voicemail Server starts, then Voicemail does not start as a time server.
It is therefore recommended that you have no copy of Manager running when you start or restart the
Voicemail Server.
· By default a broadcast address is used. A specific address for the time server that should be used can be set if
required.
· When using a time server located in a different time zone from the system, there are two mechanisms for
applying an offset to the time. If Manager is acting as the time server, the time offset can be specified
through the Time Offset of the BOOTP record for the system. Alternatively, the offset can specified in the
system configuration using Time Offset (System | System) .
·
· Manual Time Control
The use of time requests using either of the above methods can be disabled. In that case the time and date used
by the system is set manually using a system phone. See Manually Setting the System Time below. Automatic
time updates can be disabled by setting the System | System | Time Setting Config Source to None. If
automatic time updates are being used, the manual controls below are overridden and only allow display of the
time and date information received from the server.
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