I'm running into the same issue with a device. I'm not sure if it's a cabling issue or not. The switch is reporting no errors. Does anyone know how to adjust the keepalive timeout? Tx

I'm having the same issue

One thing that we have been noticing when this happens, is multiple phones in the are are going down. After close inspection, the switch is not going down, but the gig port is.

No other phones at the location are (we have 300+ at this location), just the 4 phones at this switch.

Could this possibly be spyware on the computer freaking the switch out?

Error: DeviceUnregistered - Device unregistered.

Device name.: SEP000C307087B2

Device IP address.: 10.111.1.40

Device type. [Optional]: 8

Device description [Optional].:

Reason Code [Optional].: 8

App ID: Cisco CallManager

Cluster ID: SJCCALLMGR1-Cluster

Node ID: 10.11.0.7

Explanation: A device that has previously registered with Cisco CallManager has unregistered. This event may be issued as part of normal unregistration event or due to some other reason such as loss of keepalives.

Recommended Action: No action is required if unregistration of this device was expected..

All -

Any resolution to this issue?

TIA,

Amir

Wow - resurrecting a really old thread.  As pointed out, this error typically indicates a network issue or congestion preventing timely acks to phone keepalives.  The resolution is to find and correct the root cause.  That said, a workaround would be adjusting the keepalive threshholds to prevent the phone from re-registering.  The down side is that on an actual failure/loss of connectivity, the phones will take longer to recover.

These are both callmanager service parameters:

Station and Backup Server KeepAlive Interval:	This parameter designates the interval between KeepAlive messages  that are sent from Cisco IP Phones to the secondary Cisco CallManager.
	This is a required field.
	Default:                  60
	Minimum:                  10
	Maximum:                  1000
	:                Reset affected IP phone(s) for the parameter change to take effect.
	Unit:                sec
Station KeepAlive Interval:	This parameter designates the interval between KeepAlive messages sent from Cisco IP Phones to the primary Cisco CallManager.
	This is a required field.
	Default:                  30
	Minimum:                  10
	Maximum:                  1000
	:                Reset affected IP phone(s) for the parameter change to take effect.
	Unit:                sec

Hello 5 years later.

So we have an Expressway User working at home in San Jose and when he puts an external caller on hold to transfer him the phone resets.

|AppInfo  |<--RISCMAccess::DeviceUnRegister(...)
 |AppInfo  |SIPStationD(4599) - shutdownDevice: dropping call,

|AppInfo  |SIPStationD(4599) - retryRegister: recycling

This happens every time and ever since we enabled call recording.  Any ideas on how to get this to stop so we can keep call recording?