Option 11C clock source 3

[toptater]

Anyone know what would cause this switch to loose 10-15 minutes over a two-week period? Resetting the date and time will temporarily correct this but after approximately 2 weeks all the phone sets with display will loose time. This is at a school and the time is set according to the wall clocks & bell schedules, which keep accurate time. What is the internal time source for the 11C and is there a way to look at it's configuration?

 

[PERRYPJ]

IF YOU WANTED SOMETHING TO KEEP TIME YOU SHOULD HAVE BOUGHT A ROLEX. THE ONLY THING IT CAN BE IS THE SCC CARD, WHICH IS RATHER EXPENSIVE TO CHANGE IF YOU DON'T HAVE A MAINTENANCE WITH SOMEONE.
THERE ARE SOME SETTINGS IN LOAD 2 THAT YOU CAN PLAY WITH TO CORRECT THIS.

OLD ROLMEN WORKING ON NORTELS

 

[Firebird Scrambler]

On the V23.47 versions, I understand that there was a patch to correct this.
However, there is a prompt "TDTA" in LD 2 Which will print out the current adjustment settings.
You can change this by entering "SDTA X Y"
X = (0 = negative increment or 1 = positive increament)
Y = 0-60 second adjustment in increments of 100 ms.


All the best

Firebird Scrambler
Meridian Programmer in the UK

 

[toptater]

Ok, thanks a lot. I'll look at LD 2. I've been doing some research and apparently there is a clock controller daughter bd which I suppose is on the SSC card...maybe that can be replaced...unfortunately, we do not have a maintenance contract and have 37 Option 11C switches. We can call for vendor support, but it IS expensive....can't afford a Rolex either

 

[PERRYPJ]

THE CLOCK CONTROLLER DB IS FOR THE T1'S NOT TO KEEP TIME

OLD ROLMEN WORKING ON NORTELS

 

[bluerigsby]

It may be worth checking your history files for INI messages, if something is causing your pbx to initialise a lot, this will loose time.

 

[toptater]

Thanks for the advice...guess it is time to contact the next level of support....this problem is beyond my small area of expertise.

 

[viper222]

toptater, If you are losing 10 minutes over 2 weeks, Multiply 60 seconds by 10 minutes and you get a positive 600 seconds in a two week period, divide that by 14 days (the adjustment in LD 2 is per day) which comes up to about 43 seconds. If you do a TDTA in LD2 it will five you a value. As firebird explained a 1 is a positive adjustment daily and a 0 is a negative adjustment daily, and the number after it is how many milliseconds it adjust the clock daily. SO if you infact were advancing 43 seconds a day your TDTA should be a high 1 xxx value. If it is a 1 anything I would do a SDTA 1 000 , then do a TDTA to verify it says 1 000 and then check the time the next day at the exact same time and see how many seconds it gained or lost and then adjust from there. This will do the trick for you.

 

[ArchTelecom]

I have always liked Nortels, they build a good switch, but for whatever reason they just can't get the real time clock to be accurate. Of course, what do you expect for a $10K to 40K option 11? Even if you spend $500k on an 81C they don't seem to think the real time clock is of any importance....Go figure. Come to think of it, I have this same problem with another expensive brand of switches I use...maybe it's the industry standard.

 

[toptater]

Thank you firebirdscrambler,viper222 & ArchTelcom!!! I made the adjustments and will monitor....knowledge is a wonderful thing.

 

[Firebird Scrambler]

No Probs.
It's nice to get some feedback on a problem, With help being given from many sources / countries around the Globe.
One thing about the good old "Meridian", is that you never stop learning about the product & that there is usually more than one way to solve a problem.

Best of luck

All the best

Firebird Scrambler
Meridian Programmer in the UK

 

[mjpearson]

I once worked at a location that had a time clock for punching in/out. It turned out that the clock was sync-ed to the power line frequency HOWEVER, the maintenance guys would run their emergency generator every Sat. and it had low frequency. Sure enough, the time clock was on the emergency circuit. Once a month, the maintenance guys would have to reset the clock.


mike

 

[toptater]

I think my problem has been solved...STAD 1 000 seems to be what it needed. Thanks again everyone.