Introduction
How to add a second Cisco ATA FXS port to Cisco CallManager.
Resolution
If you want to add a second Cisco Analog Telephone Adaptor (ATA) Foreign Exchange Station (FXS) port to Cisco CallManager, you need to fabricate a MAC address for the Phone 2 port by dropping the two left-most digits from the Cisco ATA MAC address, and add the digits 01 to the right-most portion of the MAC address.
Adding Cisco ATAs Manually
Use the following procedure to add Cisco ATAs manually using the Cisco CallManager Administration application.
Tip To get help using the Cisco CallManager application, access context-sensitive help by choosing Help > For this page from the main menu bar.
Procedure
Step 1 Log in to the Cisco CallManager Administration application.
From the menu bar, select System > Cisco CallManager. The Cisco CallManager Configuration screen appears.
Step 2 In the Cisco CallManager Configuration screen, perform the following steps:
a. From the list of Cisco CallManagers click the IP address or name of the Cisco CallManager to configure.
b. Enter identical Starting Directory Number and Ending Directory Number values in the fields provided.
c. Make sure that the setting called Auto-registration Disabled on this Cisco CallManager is checked.
d. Click the Update button.
Step 3 From the Cisco CallManager Administration menu bar, select Device > Phone to display the Find and List Phones screen.
Step 4 Click the Add a New Phone link to display the Add a New Phone screen.
Step 5 From the Phone Type drop-down list, make your selection as follows:
a. If you are using Cisco CallManager version 3.0 or 3.1, select Cisco 7960.
b. If you are using Cisco CallManager version 3.2, select Cisco ATA 186.
Step 6 Click Next. The Phone Configuration screen appears.
Step 7 In the Phone Configuration screen, you must enter information in the following fields:
•MAC Address —Enter the MAC address of the Cisco ATA.
•Device Pool—Select either the Default value or a configured device pool from the drop-down list.
•Phone Button Template—From the drop-down list, select Standard 7960 if you are using Cisco CallManager version 3.0 or 3.1; select Standard ATA 186 if you are using Cisco CallManager version 3.2
Step 8 Click the Insert button (called the Update button in Cisco CallManager version 3.2).
The Cisco CallManager Administration application should inform you that the device has been added to the database. You are also asked if you want to assign a directory number for the Phone 1 port at this time.
Click OK.
Step 9 In the Directory Number field, assign a directory number to the Cisco ATA.
Step 10 From the Partition drop-down list, you can select a partition for the Cisco ATA or you can keep the default value of None.
Step 11 Click the Insert button (called the Update button in Cisco CallManager version 3.2).
A popup window asks you if you want to return to the current-device page. Click OK.
Step 12 To add a second FXS port to Cisco CallManager, go back to Step 3 and proceed from there.
You need to fabricate a MAC address for the Phone 2 port by dropping the two left-most digits from the Cisco ATA MAC address and add the digits 01 to the right-most portion of the MAC address.
Example
If the MAC address of the Cisco ATA is 00070EA26032, then the fabricated MAC address for the Phone 2 port would be 070EA2603201.
Note By default, both Cisco ATA FXS ports are enabled for Cisco CallManager registration. If you do not want to add the Phone 2 FXS port to Cisco CallManager, you must change the Cisco ATA EPID1orSID1 parameter value to 0 to disable the Phone 2 port. (To disable the Phone 1 port, you must change the EPID0orSID0 parameter value to 0.)
Reference
