---
title: "ATA - Configuring Port 2 On A 190"
slug: "ata-configuring-port-2-on-a-190"
tags: ["calltower", "public"]
updated: 2026-09-18T13:21:42Z
published: 2026-09-18T13:21:42Z
canonical: "learn.calltower.com/ata-configuring-port-2-on-a-190"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://learn.calltower.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ATA - Configuring Port 2 On A 190

## Goal

This article will walk the user through adding a second MAC into the Admin Portal for configuring port 2 on a Cisco ATA 190.

## Case Disposition

**Case Record Type:** MACD

**Type:** AMC

**Product:** Cisco

**SubProduct:** Voice

**Issue:** Provisioning

**Sub Issue:** Move/Change User/Service/Hardware

**Other Issue:** Port 2 on an ATA 190

**Priority:** Standard

**Department:** Support

## Resolution/Steps

If a customer is interested in using the second port of an ATA, You are in Luck. This is possible and supported. Keep in mind though that even though it is on the same device, it will require you to use a different MAC and therefore use a separate device license in Call Manager (CUCM). Cisco uses a standard method to create a new MAC address:

1. Take the MAC address for port 1. For example, 00:00:DE:AD:BE:EF.
2. Drop the first two digits from the MAC address. In the example, 00:DE:AD:BE:EF.
3. Append “01” to the end of the 10-digit address. Example, 00:DE:AD:BE:EF:01.

Once you’ve completed those steps, take the MAC address you’ve just created and plug it into Connect with a unique name and its own DN. It will be treated as though it is an entirely different ATA device.

**Adding to CallTower Connect**

**Step 1**

Go to the Phones Menu in CallTower Connect from the menu in the top left of the page.

![Connect Menu Phones.PNG](https://cdn.us.document360.io/4662144b-ab1f-4796-8b7b-e9f9c609894f/Images/Documentation/Connect_Menu_Phones(2).PNG?sv=2026-02-06&spr=https&st=2026-11-05T00%3A13%3A03Z&se=2026-11-05T01%3A13%3A03Z&sr=c&sp=r&sig=o%2FnZUyd6ejtPOgEY%2FOhxvG3bL%2B1GAf%2Bipyb2mGWD1hU%3D)

**Step 2**

Add the phone

First press the "Add Phone" button:![Add Phone Button.PNG](https://cdn.us.document360.io/4662144b-ab1f-4796-8b7b-e9f9c609894f/Images/Documentation/Add_Phone_Button(2).PNG?sv=2026-02-06&spr=https&st=2026-11-05T00%3A13%3A03Z&se=2026-11-05T01%3A13%3A03Z&sr=c&sp=r&sig=o%2FnZUyd6ejtPOgEY%2FOhxvG3bL%2B1GAf%2Bipyb2mGWD1hU%3D)

Then select the Device Purpose; "Common Area Phone."

![Device Purppose.PNG](https://cdn.us.document360.io/4662144b-ab1f-4796-8b7b-e9f9c609894f/Images/Documentation/Device_Purppose(2).PNG?sv=2026-02-06&spr=https&st=2026-11-05T00%3A13%3A03Z&se=2026-11-05T01%3A13%3A03Z&sr=c&sp=r&sig=o%2FnZUyd6ejtPOgEY%2FOhxvG3bL%2B1GAf%2Bipyb2mGWD1hU%3D)

Now fill out all the information. Remember the MAC address is the MAC of the ATA device minus the last two characters with "01" added in its place as the instructions shown above. Here is the example again.

ATA MAC: 00:DE:AD:BE:EF

2nd Line/port ATA MAC: 0:DE:AD:BE:EF:01

![clipboard_ebe676c073183388df3e1c8cd044e3601.png](https://cdn.us.document360.io/4662144b-ab1f-4796-8b7b-e9f9c609894f/Images/Documentation/clipboard_ebe676c073183388df3e1c8cd044e3601.png?sv=2026-02-06&spr=https&st=2026-11-05T00%3A13%3A03Z&se=2026-11-05T01%3A13%3A03Z&sr=c&sp=r&sig=o%2FnZUyd6ejtPOgEY%2FOhxvG3bL%2B1GAf%2Bipyb2mGWD1hU%3D) Select the "Save" icon and the device is configured and ready to be plugged in.

## Additional Information

Line 1 and Line 2 register separately from each other. For this reason, each needs it's own unique MAC address to register within Call Manager (CUCM).

## Common Issues

One common issue is you may get a Jira Error when provisioning the device in CallTower Connect. If this happens please open a ticket with Support at 800-347-5444 or email [support@calltower.com](mailto:support@calltower.com).

Related Articles

[Cisco - Connect: How to Configure an ATA 190](/v1/docs/ata-configure-190-and-191)

Analog Telephone Adapter (ATA) is a device that allows traditional telephones to connect to a digital phone service.

CallTower Connect is is CallTower’s online management portal that lets administrators easily manage users, phone numbers, services, reporting, and communication settings all in one place.