Hi, I have number Cisco 7821, 8841 & 8851 IP Telephones configured & working fine on Cisco 3945 Router. The Configuration is done on Cisco Call Manager Express 10.5. It took allot of time for the Configuration as all these IP Telephones are SIP Protocols. I have managed to enable  the Phone book  to make it worked on Cisco 7821, after I have done allot of research. It does not show all the names straight away, the user has to search by name using Alphabets from the Dial pad. So on Cisco 7821, after you press the Phone book button I see the Search options by First Name & the Last Name. And whatever the Name I try to find out I can do so. But unfortunately, this feature failed to enable on other 2 Models (Cisco 8851 & 8841). So, is the Phone book Configuration for these 2 models are different?  And how it supposed to be configured? Is the configuration has to be on the Router like Cisco 7821 or on the Phone by itself? Now If I press the Phone book button on Cisco 8841 & 8851, I see a message saying; "Contacts not available". Here this is the example, how I have configured the Phone book feature (Working on Cisco 7821): directory entry 1 9999 name John Smith directory entry 2 9998 name Ron Wilson directory entry 3 2424 name Alex Walton   Clearance: So 1, 2 & 3 are the order numbers. 9999, 9998 & 2424 are the User's Extension Numbers & at the end the User's Name.   Thank you for understanding  ... View more

Hi, I have recently brought bunch of Cisco IP Telephones of 8851 model, which supports Key Expansion Module. I have configured many phones completely & they are working fine. I can make local calls (Using Extension number). I can also make external call (Using main phone lines). In  General the configuration is done on the Router (Model 3945, Version 15). But unfortunately I couldn't configure the the 8800 Key Expansion Module. When I plug in the Module next to the phone, I get a message on the Phone screen saying: "Key Expansion Module has been detected but it is disabled by the administrator." As you can see the attachment bellow of the picture, the Key Expansion Module is off. I have tried all possible options in order to resolve this issue through Applications menu on the phone it self, but unfortunately couldn't reach to the solution. I think the only way left is to Configure through my Lengthy Router Configuration on Call Manager Express 10.5.  I will be glad,  if any Cisco Expert can help me out to resolve this issue or provide me any sorts of Documentations that will help to resolve this issue.    Thank you for Understanding. Best Regards. Abdur-Rahman   ... View more