Sign up ×
Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

Our Shoretel 230 phones are not picking up time service correctly and thus, the time on the display is wrong. When I go to the diagnostics of the phone, they are using a wrong time server (old).

Here is the top scope of my dhcpd.conf. The instructions for Shoretel only are given for using Windows Server DHCP server - but I have found others online that have used dhcpd for use with Shoretel phones. The phones pick up the ftp server just fine - but don't seem to grab the NTP server. Any clues below to what I might have configured wrong?

ddns-update-style none;
deny bootp;
option wpad code 252 = text;
option ntp-servers,,,;
option shoretel-server code 156 = string;
option shoretel-server "ftpservers=192.168.**.***";
share|improve this question
What have you done to verify the phones are not picking up the ntp servers? Can you actually see a non-blank setting in the phone for an NTP server? Do you have a regular host you can configure for dhcp, so you can cross-check that something is picking up the ntp servers correctly? – dafydd Dec 27 '12 at 17:23
The phones have a key combo that allows you to see their config (MUTE BUTTON, I-N-F-O). When I do this it has a non blank NTP server (an old one that used to work). How would I check a regular host to see if it picked up the NTP server? – bsigrist Dec 27 '12 at 20:58
Have you tried removing a phone's DHCP registration from your DHCP server and having the phone pull in a fresh DHCP registration? Also have you tried factory resetting one of phones just to see if the correct NTP servers get pulled in? – carpetflyer Feb 26 '13 at 19:47

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.