CUCM 9 Directory

[m.elmaaroufi]

Hi all,

I have a CUCM v9, connected and synchronized with Microsoft LDAP correctly. When I hit the Directory Button for the first time, It take a long time to respond to my request, and after that I can get response quickly. I'm asking if there is something wrong, or it's a normal behaviour from CUCM?

Regards

Med

[Jaime Valencia]

No, are you using IP or hostname?

What's the CPU utilization on the server?

What's between the phone and the CUCM server?

[m.elmaaroufi]

Hi,

And thank you for your feedback, in my case, I use IP addressing between CUCM and all the endpoints, the CPU is normal. I don't know if the CUCM try to download the LDAP directories after every first request, or there is another issue that cause this delay.

Regards

Med

[Chris Deren]

Sounds like DNS resolution is taking long time, best way to prove it would be to put a PC with wireshart on the back of the phone and trace the request and look for DNS packets.

Chris