Unboxing and plugging in our first batch of Polycom CX600’s on my current project I found myself unable to sign into Lync, the phone was complaining about not finding the certificate URL.
A quick search revealed I was missing some serious DHCP options required for the phone to work. I started trying to enter these manually only to find that without a serious guide I would be stuck!
So, here is the exact steps required to get the devices to work on your network.
1. Identify both your DHCP server and your Lync Frontend Server ( The one with the web roles on it ).
2. We need to execute a script located in “c:\program files\common files\microsoft lync server 2010\” on the Lync FE server, on the DHCP server for on the network in which the phones will be used:
<a href="file://\\\\<FileShare and path>\DHCPUtil.exe -SipServer <Lync ServerPool FQDN > -WebServer <Lync Server Internal Web FQDN> -RunConfigScript.
I merely mapped a Z: drive to the location and executed as follows:
Once completed, you can have a look at the options on your DHCP server, which would look something like this:
A reboot of the device and we are able to sign on?
Not quite, there are 2 ways of signon with the CX600:
This is the easiest option, connect the supplied USB cable to your Windows Computer, once the device has started up, you are merely required to sign out and back into the lync client for all your credentials and details to be setup on the phone for you.
A little more effort, however required for standalone phones and users not using a microsoft based operating system.
Step 1: Assign an extension number to the user using the following command, please replace with your number and extension
set-CSUser -identity “auser” -LineURI”TEL:+27111234567;ext=4567″
Note the additional “;ext=4567” above
The user is also required to set their PIN, which can be done on the PSTN conferencing page on the Lync Web Server:
Once authenticated the user can set his/her pin. The complexity requirements for this pin, as well as the PIN required on the phone can be set via CSCP. The default is 6 digits, which can be a bit lengthy. Also note the default lock time on Lync 2010 for phones is 10 minutes, which requires the users pin to unlock.
And that is basically that, phone works and everyone is happy.
For assistance with phone updates, I suggest the following article, written so comprehensively, I don’t see the need to do my own: