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Home » GFI User Forums » Kerio Control » DHCP Issue (Device registering every 15 minutes)
DHCP Issue [message #148540] Sat, 08 August 2020 12:17
Tech1UAE is currently offline  Tech1UAE
Messages: 44
Registered: July 2011
Hi all,

I have a Control Box NG500. Attached to LAN port 5 is a Cisco SG300-28PP switch in factory default mode and connected to that is a Yealink SIP-T23G phone.

The switch and phone successfully obtain an IP address from the Control Box DHCP server and the lease time is set to 1 day.

However, every 15 minutes without fail, the phone loses it's DHCP registration and then obtains the same IP again. 15 minutes later, it does it again.

Anyone got any ideas? I've searched Google to no avail.


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