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VVX 1500 GMT offset not correct

Occasional Advisor

VVX 1500 GMT offset not correct

I had VVX phones registered with CUCM and i set the SNTP to CUCM. the phone gets the time from the CUCM but without the GMT offset. i tried to add the GMT offset on the phone but it seems that it igonrs it.


i created a sip.cfg file with the following, but i need to check before applying it that it will only affect the time settings on the phone and all other settings will not be affected.


also i need to confirm that these settings will fix the problem.

the GMT offset is: GMT +3

the daylight saving is disabled.


<?xml version="1.0" encoding="UTF=8" standalone="yes"?>

        <SNTP tcpIpApp.sntp.resyncPeriod="600"
            tcpIpApp.sntp.address="" tcpIpApp.sntp.address.overrideDHCP="1"
            tcpIpApp.sntp.gmtOffset="10800" tcpIpApp.sntp.gmtOffset.overrideDHCP="1"
            tcpIpApp.sntp.daylightSavings.enable="0" tcpIpApp.sntp.daylightSavings.fixedDayEnable="0"
            tcpIpApp.sntp.daylightSavings.start.time="2" tcpIpApp.sntp.daylightSavings.start.dayOfWeek="1"
            tcpIpApp.sntp.daylightSavings.stop.time="2" tcpIpApp.sntp.daylightSavings.stop.dayOfWeek="0"


Message 1 of 3
Polycom Employee & Community Manager

Re: VVX 1500 GMT offset not correct

Hello Ahmed,


there are already quite a few SNTP related post's in the VoIP community that you should be able to easily find via the Community Search and all changes can be made via the Web Interface to prevent configuration file miss configuration.


The GMT+3 indicates a Russian or similar Time Zone and I am aware that certain UCS 3.3.x or newer Software Versions had an issue with this.


As you have not provided the Phones Software Versions I am unable to advise.


Best Regards


Steffen Baier


Polycom Global Services

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Message 2 of 3
Occasional Advisor

Re: VVX 1500 GMT offset not correct

Hi steffen.


i read the posts related to the GMT offset and i concluded the settings from it but i didn't find the sip.cfg file so i created it.


i'll send the file to customer to apply it remotely so i wanted to check that none of phone configuration will be changed and only the time settings will be changed. also if the syntax are correct.


the running software is UCS 3.3.1


thanks in advance

Message 3 of 3