🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
How to sync time in Linux | 3CX Forums
July 26, 2019 - I find windows way: https://www.3cx.com/blog/docs/setting-windows-server-time/ But I don't find the Linux way. Customer's 3CX need sync time to their internal time server. How to setting the sync time server in Debian?
🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
3CX SELF HOSTED - NO SYSTEM CLOCK SYNCHRONIZED | 3CX Forums
September 9, 2025 - Hello everyone, We've noticed during our recent installations that the systemd-timesyncd package is no longer natively included in the ISO provided on the 3CX partner portal: debian-amd64-netinst-3cx.iso. Do you know why this change was made? This forces us to install the package manually...
Discussions

Time is off on all phones
First check the timezone of the system Settings > Language & Office Hours Settings and ensure that is set correctly. Secondly, check the timezone setting of the user extension: User > Phone Provisioning > Options Heading - Timezone More on reddit.com
🌐 r/3CX
7
4
October 14, 2022
Fanvil X7 - Cannot get time to sync correctly
IS NTP provided as a DNS address or a name address? time.google.com or 216.239.35.4 More on reddit.com
🌐 r/3CX
4
4
March 26, 2021
3cx

I have had issues with them reaching the time server in the past. I would check packet capture for ntp related traffic.

More on reddit.com
🌐 r/3CX
6
1
March 13, 2023
3cx Hosted pushing wrong NTP Server
NTP should be set via your DHCP options, specifically option 42 for old polycoms. More on reddit.com
🌐 r/3CX
6
1
January 22, 2024
🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
How to change system time 3CX v20 debian | 3CX Forums
June 4, 2024 - As far as I know if installed from 3cx iso, SSH is open, as of v18, I just did upgrades not fresh install · Click to expand... I confirm that SSH is open. I connected via SSH a little while ago, I adjusted the date and time and now the system works perfectly!
🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
V20 Time Sync Missing - Causing issues with Afterhours Call routing ect | 3CX Forums
July 7, 2025 - I cant enable time sync because the service is not installed! So then you need to install the time sync service as its not there by default in the 3CX distro. sudo nano /etc/systemd/timesyncd.conf add this one line: NTP=nz.pool.ntp.org Save it.
🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
Time settings | 3CX Forums
May 20, 2019 - Then, in the 3CX management console, go to Settings > Timezone and also ensure this is correct. Once all is done, go to your extensions and ensure that under Phone Provisioning, the devices have "Use global timezone" selected.
🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
Solved - New to Linux, system time/DST question | 3CX Forums
December 11, 2021 - Of course, don't forget to set your timezone in Settings > Time/Holidays/Hours. ... Need help with integrations? Visit our website to learn more about us! Also, choose us as your partner using 201484 in the Partner ID box!
🌐
3CX
3cx.com › home › tags
ntp | 3CX Forums
Hello everyone, We've noticed during our recent installations that the systemd-timesyncd package is no longer natively included in the ISO provided on the 3CX partner portal: debian-amd64-netinst-3cx.iso. Do you know why this change was made?
🌐
Reddit
reddit.com › r/3cx › time is off on all phones
r/3CX on Reddit: Time is off on all phones
October 14, 2022 -

What would cause time issues? NTP is set correctly all the phone go into the same server.

Time and Date.

Yet all the times are off and they aren't following the same time. I've fixed this by factory resetting and provisioning, but this is getting to be a big task when after 1 month I need to do this again.

What can I check for?

🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
Solved - Date and time issue | 3CX Forums
September 28, 2018 - If so what happens if you change Time_NTP_Server parameter to server IP address. (Settings - Parameter , search for time_ntp) ... The 3CX Host is on the same subnet as the phones and the Host can successfully query time at pool.ntp.org.
Find elsewhere
🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
Time and Date not Synchronizing with 3CX | 3CX Forums
June 28, 2024 - Regards, Technical support Intermediate Level 2 - 3CX Gregory. B ... Hi there. Your phone will get the time from the global pool.ntp.org and not from the 3CX system directly.
🌐
58VOIP
en.58voip.com › 首页 › how to modify debian linux ntp server
How to modify debian linux NTP server | VoIP Expert - 58VOIP
June 13, 2023 - To verify if the time is now synchronized correctly, you can use the date command: date -R · tony2023-06-13T15:44:47+08:00 · FacebookTwitterLinkedInWhatsAppTumblrPinterestVkEmail · FXO gateway registers to 3CX server by 3CX SBC or router phone · September 19th, 2025 ·
🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
Simply setting the time | 3CX Forums
July 14, 2018 - Check this out. Also you can set the timezone manually here or under each extension in the Provisioning tab. ... 3CX Advanced certified engineer Wireshark Certified Network Analyst Patton Certified Voice Expert (PCVE) Audiocodes ACA (SBC) Yealink CIPPE certified engineer
🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
Solved - System time | 3CX Forums
February 4, 2017 - It used to be under Troubleshooting/Parameters/Custom Parameter...then scroll down to Time_Timezone_XXXXX where XXXXX was the make of set. That may have changed in Version 15, but should be similar. ... Yes, leejor, those settings are still there in V15. That would work if one uses a phone listed there and with the older firmware that 3CX supports.
🌐
3CX
3cx.com › home › tags
timezone | 3CX Forums
Why: Multiple phones/DIDs in different time zones. After hours routing triggers 3 hours early on a DID for east coast when server is west coast. It seems there are couple area within 3cx for hours/timezones settings: Timezone at System level...
🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
NTP client on 3CX v20 on Debian 12 | 3CX Forums
May 23, 2024 - # 3CX PhoneSystem specific tcp dport { 80,443,5000,5001,5015,5060,5061,5062,5090 } ct state new counter accept comment "Accept 3CX PhoneSystem TCP ports" udp dport { 69,123,5060,5090,7000-10999 } counter accept comment "Accept 3CX PhoneSystem UDP ports" The ntp conf that pertains to above! /etc/ntpsec/ntp.conf # By default, exchange time with everybody, but don't allow configuration.
🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
Solved - Change Default NTP Servers | 3CX Forums
June 22, 2018 - I log onto the phone, go to Settings > Time & Date and change the Primary and secondary NTP servers to our internal DC IP's and the time changes to the correct time/date almost instantly...
🌐
3CX
3cx.com › home › blog › configuring the time zone on ip phones
Configuring the Time Zone on IP Phones
December 7, 2015 - Posted on November 24th, 2010 by ... System v12.5 and lower. 3CX Phone System includes functionality to easily set the Time Zone and DST (Daylight Savings Time) parameters on phones via provisioning....
🌐
Reddit
reddit.com › r/3cx › fanvil x7 - cannot get time to sync correctly
r/3CX on Reddit: Fanvil X7 - Cannot get time to sync correctly
March 26, 2021 -

Testing out Fanvil X7 on our 3CX 16 Installed on Server 2016. Currently using a mix of Yealink and Polycom phones with no time sync issues.

On Firmware 2.4.7

I have tried either syncing the time to server using DHCP and tried SNTP but neither will show the correct time or date.

https://i.imgur.com/JZlDbor.png

Has any one else had this issue / found a work around?

🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
3CX system clock lagging 2 weeks or more | 3CX Forums
June 29, 2020 - Check out time sync on Debian hyper-v https://www.3cx.com/docs/installing-microsoft-hyper-v/ as you are running Virtualbox, you may have to google ntp settings for this virtual setup the parameters "TIME_NTP_SERVER’ is used by 3cx and not the operating system
🌐
3CX
3cx.com › home › forums › categories › phone system / pbx
Phone server and phones wrong time | 3CX Forums
July 7, 2023 - ... The option to sync time with DHCP or SNTP is not set by 3CX, as these options are specific to individual network options and configurations and are only used if you have the option to assign network time via your internal DHCP server or SNTP.