Hi Mark Are all 6921 phones affected? Usually if only the Handset is affected the reason is hardware. Most of the time the handset cable (or connectors). Best Regards slashdots ... View more

Hello Thorsten Have you checked if the Phone receives enough power? If possible try to boot the phone with a external power supply. Best Regards slashdots ... View more

The default view of the service parameters is condenced. You will have to expand the view by clicking "Advanced" Here the Path you will have to follow: System -> Service Parameter -> select Server -> select Cisco CallManager -> A new Page will load -> then click on the "Advanced" button at the top of the page After this you should be able to see the newly added parameter mentioned by Rob cheers slashdots ... View more

Hi Ashish Seems like there is a problem which keeps the two server to communicate to eachother. See the Link for more information: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/9x/troubleshooting/guide/9xcuctsgx/9xcuctsg080.html#wp1051417   Cheers slashdots   ... View more

Hello Fei You can also try the steps described here: http://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/116717-trouble-cucm-shutdown-00.html This document helps you to examine the Reasons for shutdown, reboot etc. In my opinion this also could be due to a power outage. (Since there are no logs of Services which got shutdown) cheers slashdots unrelated: You might want to check your licenses since there are a lot of License File Errors in your logs (file CiscoSyslog) ... View more

Hi You are posting in Cisco Supportforum. I gues it's very unlikly to get a fast and accurate answer here. You might want to try the Supportforum from Avaya https://support.avaya.com/forums/index.php Maybe you are lucky and we have a few avaya engineers here ;) Chees Stefan   ... View more

+5* for Chris for this fast and good solution. I have one more additional thought: You may wan’t to check how the phone in elevator works. Some of these “one Button phones” have a hard coded number which gets dialed as soon as the button is pressed. In this case you would simply configure the phone like any analog phone.   cheers slashdots ... View more

Hello You are probably running an version of SRST where the 8831 are not supported   You may wan't to upgrade your IOS to version 15.1(4)M to gain SRST Support for your 8831 more Details here: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cusrst/requirements/guide/srs86spc.html   cheers slashdots ... View more

Hi Jeff I would check the following - Are the 30% - 40% in another Device Pool as the others? --If yes check the CUCM Group configured in this Device Pool If the same phones sometimes register on the sub, and sometimes on the pub. You may want to check if they acctually cannot reach the sub and therfore fallback to the pub. Since only Wifi Phones are affected by this behavior I would check the wifi setup. An important step is to try to group the phones even more. Maybe there are phone which are never affected by this. If you find such a phone you can try to compare a  affected  phone with a “healthy” one. cheers slashdots   ... View more

Hello I’ve never done this. It’s just a thing which came to my mind ;) Maybe you will give this a try. 1.    Create a “Message Aging Policy” which will delete the messages after one day. 2.    Make sure every user is linked to this Policy 3.    Wait one Day 4.    Check if the messages are gone 5.    Edit the Message Aging Policy to a value which is usefull (for example 15 days) Please be careful when deleting “everything” often users depend on some messages on their mailbox. If you run out of storage, maybe a proper configured Message Aging Policy will do the trick. Cheers slashdots ... View more

Hi Med Since you get an LDAP error, I would check if the Subscriber is properly connected to the LDAP Server. cheers slashdots ... View more

Hi Since you are using very basic Phones you have not much options. Usually I would point you to “Busy Lamp Field” (BLF). BLF are supported on the phones you are using. They look like speed dial buttons, but light up (or change the icon) when the associated line is busy. Unfortunately on your phones there is not much space for such buttons. So I don’t know if this would be a solution to you. If you think about upgrading your system you might consider implementing a Presence. Which will make the status of all users available through a client on the computer? Of course there is always the very basic busy  notifier -> “Busy signal when calling a user” which works by default ;)   cheers slashdots ... View more

Hi Seems like they should be supported pretty soon: They should be supported in IOS 15.4(1)T which will come in March 2014 See: https://communities.cisco.com/thread/39200 As I've search I couldn't find any info about it's actually out yet. See compability matrix for details http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/requirements/guide/33matrix.html cheers   ... View more