Droped calls goes to Preservation Mode | 7841 Phones | CUCM 11.5

Ritesh Desai · ‎05-25-2017

Hi folks,

Have deployed CUCM 11.5 in cluster. Am experiencing a problem of dropped call between CIPC 8.6.6 and 7841 IP Phone.

When CIPC hangs-up call, 7841 phone goes into Preservation mode and call timer goes on increasing. On 7841 phone manually have to hangup the call.
Call on CIPC disconnects automatically after 17-20 seconds. On 7841, call goes to Preservation Mode.

This is 1st time am facing problem. Can someone please suggest me a solution.

Thanks & regards,

Ritesh Desai

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regards, Ritesh Desai

Ritesh Desai · ‎05-25-2017

Hi,

Refer URL: https://supportforums.cisco.com/discussion/12753526/cisco-7821-preservation-mode-error-message-and-call-drop

It also says about the bug. This is fixed in CUCM 11.5.

Known Fixed Releases:
(5)

11.5(1.10000.6)

11.5(0.98000.163)

11.5(0.98000.126)

11.5(0.98000.113)

11.5(0.98000.108)

Also, am facing this issue on LAN network. Both phones are on same access switch but on different VLAN.

thanks & regards,

Ritesh Desai.

*** Please rate helpful post. Please mark as answer if it solves your problem/query.
regards, Ritesh Desai

Ritesh Desai · ‎05-26-2017

Hi All,

the cause of the issue in my scenario was due to a CIPC was registered under 2 active directory profiles of different users from same system. This was causing the randomly call disconnection between CIPC's and Hardphones.

Thanks & Regards,

Ritesh Desai.

*** Please rate helpful post. Please mark as answer if it solves your problem/query.
regards, Ritesh Desai