Re: Time on IP phone

yanhui-wang · ‎10-29-2005

Time show up on IP phones is one hour behind operating system time. sounds to me that callmanager(ip phones) doesn't take summer time.

Any suggestions? Thanks!!

Chris Deren · ‎10-30-2005

Check your Date/Time Group configuration on CallManager under System. Make sure you have correct date/time group defined and applied to phone's Device Pool.

Chris

yanhui-wang · ‎10-30-2005

I double checked, there is no problem with date/time group config. Since today is no longer summer time, the time on ip phones are correct. But I think it will be a problem since next summer time begins.

Brandon Buffin · ‎10-30-2005

Make sure that "Automatically adjust clock for daylight saving changes" is checked Under Date/Time Properties -> Time Zone on your CallManagers. Double click the clock in the system tray to get to this setting.

Brandon

gene · ‎10-30-2005

Keep in mind the phones clock off the server they are registered to. If you are looking at the time on the publisher, perhaps the phones are regestired to a subscriber and a time setting is messed up on it.

yanhui-wang · ‎10-30-2005

Thanks!!

scro · ‎10-31-2005

We had a similar problem last week. Our 7970 phones changed back one hour a week early, but the 7960s were ok. I implemented the latest 7970 load and this resolved it.

Both phone models register to the same server!

Stevie

bhattacharya.s · ‎11-01-2005

Hi,

I have seen a lot of issues like this in 7970 phones. There was a bug filed for this and the latest phoneload for 7970 solves this. But, in those days when we didnt have this phoneload, we used to create a date/time group and put it in a time zone which was in the time that my phone was displaying - like, say my phone is 5 hours behind the correct time. So, I will create a date/time group which is 5 hours ahead of my correct time zone, and then assign this date/time group to the device pool where the phones are having the time issue.

I think you can also do this and this will really work. Let me know incase of any issues.

bhattacharya.s · ‎11-01-2005

Just wanted to add - this will work for any model of Cisco IP phone