How do you turn off the second port on an ATA? I would like it not to register with Call Manager and thus use up DLUs for unused ports or cause transient connection errors.
Go to the webpage of the ata device, for instance http://10.1.1.125. From there select the 'SCCP Paramaters' (assuming you are using sccp). Once at the parameters page, set SID1 to 0 and click apply. The event log errors will go away after this.
To disable auto registration for any of the port set Sid 0 or Sid1 to 0 or empty. This will disable the port and not attempt a registration with CM. If you want to manually add the port in CM, put Sid0 or Sid1 as the mac-address of the appropriate port.
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