Problem with time after Daylight Savings Time change

[jneiberger]

This is weird and I don't know enough about Avaya systems to figure it out. Our PBX has the correct time. We have verified this by doing a "display time" from the command line as well as going to the web-based configuration utility. NTP is configured and working. However, every phone connected to the system is an additional hour ahead. In other words, a few minutes ago the time should have been 10:00 AM, but the phones showed 11:00. It's as if they have sprung forward twice!

Any thoughts?

 

[Mitch672]

display locations" see what the time offset is set to.



Mitch

AVAYA Certified Expert

 

[jneiberger]

The timezone offset is +00:00.

 

[AvayaTier3]

clocks on phones are set based on location and DST rules.
The switch updates these if programmed to do so.


# system maintenance update clocks on voice terminals is controlled by "System Updates Time On Station Displays? y" If set to n, they will not be updated by CM maintenance.

However, time on a voice terminal is updated immediately when the voice terminal user depresses the date-time button
This sets the voice terminal clock hour and minute to match the switch clock hour and minute.

If switch clock is 12:59:59 and the date-time is pressed, the voice terminal clock is set to 12:59:00 and in one second will be off from the switch clock by one minute.
This is working as designed and has always worked this way.

A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"

bsh

36 years Bell, AT&T, Lucent, Avaya
Tier 3 for 26 years and counting

http://bshtele.com

 

[jneiberger]

AvayaTier3, I don't understand your comment. I don't even know what date-time button you're talking about. Every phone at this site, no matter what model (including our IP phones) has the time wrong even though the system has the correct time.

 

[AvayaTier3]

change daylight-savings-rules                                   Page   1 of   2
                        DAYLIGHT SAVINGS RULES

 Rule          Change Day                 Month  Date   Time    Increment

  0: No Daylight Savings

  1: Start: first Sunday     on or after March     8   at 02:00   01:00
      Stop: first Sunday     on or after November  1   at 02:00
------------------------------------------------------------

change locations                                                Page   1 of  16
                                   LOCATIONS

                ARS Prefix 1 Required For 10-Digit NANP Calls? n

 Loc.  Name           Timezone Rule  NPA  ARS   Attd         Pre-   Proxy Sel.
 No.                   Offset             FAC   FAC          fix    Rte. Pat.
 1:   Southfield East + 00:00   1    248
 2:   Ann Arbor       + 00:00   1    734
 3:   Southfield West + 00:00   1    248
 4:   Cleveland, Ohio + 00:00   1    216
 5:   Clinton, Mich   + 00:00   1    586
 6:   Traverse City   + 00:00   1    231
 7:   Chicago         - 01:00   1    312

A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"

bsh

36 years Bell, AT&T, Lucent, Avaya
Tier 3 for 26 years and counting

http://bshtele.com

 

[jneiberger]

Oh, okay. It appears that our location is using rule 1, which does adjust for DST. However, when I type "display time" is says that rule 0 is being used.

Regardless, the system has the correct time, but all the phones are an additional hour ahead. We have rebooted one of the IP phones and it still has the wrong time.

 

[AvayaTier3]

date-time is a programmable button that can be on a voice terminal, or not.

locations are associated with cabinets, media-gateways, network-regions which are how you program an associated DST rule and timezone offset.

A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"

bsh

36 years Bell, AT&T, Lucent, Avaya
Tier 3 for 26 years and counting

http://bshtele.com

 

[Mitch672]

set time"

change it to use rule 1, everything will be corrected during the next maint interval, or may update slowly through the day.


Mitch

AVAYA Certified Expert

 

[jneiberger]

Okay, but why would the phones be an additional hour ahead? They jumped ahead two hours. That just seems weird that the system time jumped one hour as it was supposed to, but the phones jumped ahead two hours.

 

[AvayaTier3]

change

Daylight Savings Rule: 1

set time                                                        Page   1 of   1
                               DATE AND TIME

        DATE

            Day of the Week: Monday         Month: March
           Day of the Month: 15              Year: 2010

        TIME

            Hour: 9   Minute: 47    Second: 55   Type: Daylight Savings

                       Daylight Savings Rule: 1

  WARNING: Changing the date or time may impact BCMS, CDR, SCHEDULED EVENTS,
           and MEASUREMENTS


display system-parameters features                              Page  10 of  19
                        FEATURE-RELATED SYSTEM PARAMETERS

                                     System Updates Time On Station Displays? y

A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"

bsh

36 years Bell, AT&T, Lucent, Avaya
Tier 3 for 26 years and counting

http://bshtele.com

 

[Mitch672]

Trust us, you now have the same advice from 2 independent (an knowledgable, I msust say) sources.



Mitch

AVAYA Certified Expert

 

[AvayaTier3]

system maintenance update clocks on voice terminals is controlled by "System Updates Time On Station Displays? y"


If set to n, they will not be updated by CM maintenance during the next maintenance interval.

These will update immediately when date-time button is depressed.

A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"

bsh

36 years Bell, AT&T, Lucent, Avaya
Tier 3 for 26 years and counting

http://bshtele.com

 

[jneiberger]

Mitch, I do trust you. I don't understand you. lol

The system has the correct time. It jumped ahead one hour just as it was supposed to. The phones jumped ahead two hours instead of one. What would cause the phones to jump ahead two hours?

 

[jneiberger]

The info about the date-time button is not helpful for us since we do not have that button on any of our phones.

 

[AvayaTier3]

FYI

Add a date-time button. This is helpful for testing.
It will allow you to control when your voice terminal clock updates and you can tell if the rest of your system programming is correct.

Especially if you do not have the maintenance programmed to do updates. Even if you do have the maintenance programmed to do updates, you cannot control when it happens. You may have to wait up to 24 hours for 10,000 phones to get updated.


A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"

bsh

36 years Bell, AT&T, Lucent, Avaya
Tier 3 for 26 years and counting

http://bshtele.com

 

[jneiberger]

Our main phone guy returned to the office and figured it out. He actually had to go into "change locations" and set the rule back to 0. They had been previously set to rule 1, which was causing them to move forward an hour. But the system had already been updated, so that made the effective change on the phones to be +2:00.

All seems to be well now. Thanks for the help.