We are using CallManager 10.5.2.10000-5.  We have some 8851 phones already configured on the system.  However, a new batch of 8851 phones recently ordered will not register.  They are prompting for an activation code.  How do we handle?  Thanks.

I thought this would be an easy thing but it's not working.  I need to have hold music play when an extension puts someone on hold.  I made the selection in Call Manager (User Hold MOH Audio Source and Network Hold MOH Audio Source) however it's not ...

We have a user with a 7975 IP phone.  She has one DN configured at the first button and one DN at the last button.  There are six buttons in the middle with nothing.  She is able to get up to four calls at the same time on the top DN but not more.  W...

We have several users that are set up for Single Number Reach.  It works for everyone except one person.  Here's what happens.  A call is placed to user's desk phone, it rings, shortly after that his cell phone rings too.  However, when he tries to a...

I'm preparing to take the CIVND 210-065 exam in September.  I've read the Cisco study guide and completed all the questions in the book.  Are there any other resources out there that are worth using to prepare?  Any other good books, study resources,...