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Here is how to get port 2 of ATA to register to Call manager.

THis is the link on

See step 6 in this section:

Manually Configure Cisco CallManager 3.0, 3.1 or 3.2 to Recognize the ATA 186

This is the procedure:

Use the following procedure to add the second port on the Cisco ATA 186 to CallManager.

1) Drop the first 2 nibbles of the MAC address and shift the MAC address to the left, then add 01 to the right end of the MAC address.

2) For example 00070EA26032 is port 1 and 070EA2603201 is port 2.

3) Use this new MAC address from above to add it to Cal Manager.

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