TIPS Polycom phone clocks are not being set

signal15

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I have option 42 for NTP configured in my DHCP server, as well as options 100 and 101 for timezone info. The Polycom phones don't seem to pick up any of this. Additionally, I manually specified an NTP server (with an IP, not a hostname) in the sip.cfg file, and they don't pick that up either. I've tried setting the DHCP override for NTP and timezone to both 1 and 0, and neither one has any effect.

Another thing to note is that the phones are not picking up DNS from my DHCP server.

Now I know how my parents felt in the 80's staring at their VCR clock.
 

islandtech

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Why not use the time synchronization in the phone configuration
 

dicko

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There needs to be an open route to port 123 to whatever time server you use, for security, make sure you have a working one internal to your network.
 

signal15

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There's a firewall policy in place that allows the phone to talk to the NTP server. I want to avoid having to go into the menu on each phone and configure it there, it needs to be autoprovisioned.
 

signal15

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Here's the section of my sip.cfg with the NTP configuration:

Code:
 <TCP_IP>
     <SNTP
       tcpIpApp.sntp.resyncPeriod="86400"
       tcpIpApp.sntp.address="216.239.35.0"
       tcpIpApp.sntp.address.overrideDHCP="1"
       tcpIpApp.sntp.gmtOffset="-18000"
       tcpIpApp.sntp.gmtOffset.overrideDHCP="1"
       tcpIpApp.sntp.daylightSavings.enable="0"
       tcpIpApp.sntp.daylightSavings.fixedDayEnable="0"
       tcpIpApp.sntp.daylightSavings.start.month="3"
       tcpIpApp.sntp.daylightSavings.start.date="8"
       tcpIpApp.sntp.daylightSavings.start.time="2"
       tcpIpApp.sntp.daylightSavings.start.dayOfWeek="1"
       tcpIpApp.sntp.daylightSavings.start.dayOfWeek.lastInMonth="0"
       tcpIpApp.sntp.daylightSavings.stop.month="11"
       tcpIpApp.sntp.daylightSavings.stop.date="1"
       tcpIpApp.sntp.daylightSavings.stop.time="2"
       tcpIpApp.sntp.daylightSavings.stop.dayOfWeek="1"
       tcpIpApp.sntp.daylightSavings.stop.dayOfWeek.lastInMonth="0"/>
  </TCP_IP>
 

dicko

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Intuitively I would replace

tcpIpApp.sntp.address.overrideDHCP="1"

with

tcpIpApp.sntp.address.overrideDHCP="0"

and arrange that all your DHCP servers either remote or local are properly functioning and secure as to their propagated NTP service address.
 
Last edited:

signal15

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Intuitively I would replace

tcpIpApp.sntp.address.overrideDHCP="1"

with

tcpIpApp.sntp.address.overrideDHCP="0"

and arrange that all your DHCP servers either remote or local are properly functioning and secure as to their propagated NTP service address.

I have tried this. I'll try it again.
 

islandtech

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In the Polycom phone, I set the SNTP server to the IP address of my PBX.
Never had an issue with the time
 

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