Configuring DHCP Options to Enable Sign-in for Lync IP Phones

Copy DHCPUtil.exe and DHCPConfigScript.bat in to a folder on DHCP server. (Or Download DHCPConfigScript and DHCPUtil.exe from here)

On the DHCP server, run the following at the command prompt:

DHCPUtil -SipServer <FQDN of Lync Server> -WebServer <Lync Server Internal Web FQDN> -RunConfigScript

Eg:

DHCPUtil -SipServer lync01.lync.local -WebServer lync01.lync.local -RunConfigScript

For Validate that the DHCP options entries restart the DHCP Service.

Values will be displayed as follow.

Add NTP Server IP.

To check the settings are done properly run the below command on a client pc which has taken IPs from DHCP server.

DHCPUtil -EmulateClient