Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for
Search instead for
Did you mean:
Cisco ATA configured as a skinny device constantly drops the connection to the Cisco CallManager with the "Error: DeviceTransientConnection - Transient Connection Attempt" error in the Cisco CallManager event log
The reason for this issue is that ATA Port 2 is not registered in Cisco CallManager, and it is not disabled on the ATA. As a result, when ATA Port 2 attempts to register in Cisco CallManager, Cisco CallManager rejects the registration request.
The error message in the Cisco CallManager event log will be similar to :
Explanation: A connection was established and immediately dropped before completing registration. Incomplete registration may indicate a device is rehoming in the middle of registration. The alarm could also indicate a device misconfiguration, database error, or an illegal/unknown device trying to attempt a connection.
Recommended Action: No action is required if this event was issued as a result of a normal device rehome.
In order to resolve this issue, you need to either configure the second port in the Cisco CallManager or disable it on the ATA.
Disable the second analog Foreign Exchange Station (FXS) port on the ATA - Set the field EPID1 or SID1 to 0 (zero).
Disable the first analog FXS port on the ATA - Set the corresponding EPID0 or SID0 field to 0.
Use value 0 to disable the port(s) you are not using:
SIDx specifies whether to enable the Phone 1 and/or Phone 2 ports on the Cisco ATA to register with Cisco CallManager. (EPIDx is not for SCCP.) SIDx can be one of these values:
0 - Disables the port. The port does not attempt to register with Cisco CallManager.
. or - Uses the default Skinny ID, which is the Cisco ATA MAC address (MAC) for the Phone 1 port and MAC[1-5]+01 for the Phone 2 port. The port attempts to register with Cisco CallManager. For example, if the MAC address of the Cisco ATA is 00012D01073D, then SID0 is 00012D01073D and SID1 is 012D01073D01.