The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
You connect the ATA 191 hardware and configure the ATA 191 by loading the QED and firmware files. Install the QED file first, then install the firmware file. For more information about loading the QED and firmware files, see the "Installation Notes" section of the "Release Notes for Cisco ATA 191 Analog Telephone Adapter".
The ATA 191 acts as an endpoint on an IP telephony network. The following equipment is required:
Call Control system
Voice packet gateway—Required if you are connecting to the Public Switched Telephone Network (PSTN). A gateway is not required if an analog key system is in effect.
Ethernet connection
To ensure general safety, follow these guidelines:
Do not get this product wet or pour liquids into this device.
Do not open or disassemble this product.
Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.
Use only the power supply that comes with the ATA.
Ultimate disposal of this product should be handled according to all national laws and regulations.
Read the installation instructions before you connect the system to its power source.
The plug-socket combination must always be accessible because it serves as the main disconnecting device.
Do not work on the system or connect or disconnect cables during periods of lightning activity.
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.
For translated warnings, see the Regulatory Compliance and Safety Information for the Cisco ATA 191 document.
The ATA 191 package contains the following items:
Cisco ATA 191 Analog Telephone Adapter
Regulatory Compliance and Safety Information for the ATA 191
5V power adapter with appropriate country clip
Ethernet cable
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The ATA is intended for use only with the 5V DC power adapter that comes with the unit. |
You can use either Category 3/5/5e/6 cabling for 10-Mbps connections, but you must use Category 5/5e/6 for 100-Mbps connections.
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Step 1 |
Connect the power supply to the Cisco DC Adapter port. |
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Step 2 |
Connect a straight-through Ethernet cable from the network to the network port on the ATA. Each ATA ships with one Ethernet cable in the box. |
You can attach one or two phones to an ATA 191.
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Connect one or more phones to a phone port of the ATA with an RJ11 cable. The PHONE1 and PHONE2 LEDs on the ATA light as solid green when there is activity on that port. |
After your ATA has power connected to it, it begins the startup process by cycling through these steps:
The Power LED flashes during the startup process.
The Problem Report Tool (PRT) LED lights solid amber during initial bootup. The LED then flashes amber and then green while the application and kernel are booting.
If the PRT LED lights red during bootup, then either the MIC certificate failed, or the ATA failed to obtain a network address.
The LED for Phone 1 flashes while the Phone1 port boots, followed by the LED for Phone 2.
After the Phone1 and Phone2 ports register with Cisco Unified CM successfully, the corresponding LEDs are lit with solid green. If a phone port fails to register, the LED rapidly flashes in green three times, then repeats.
When you go offhook on the phone, the phone LED begins to flash, and you hear the dial tone. The ATA has completed the startup process.
Perform this configuration if you are not using DHCP in your network.
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Step 1 |
Configure these network settings on the ATA after you install the device on the network:
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Step 2 |
Configure these optional settings as necessary:
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Step 3 |
Collect this information. |
Security features protect against several threats, including threats to the identity of the phone and to data. These features establish and maintain authenticated communication streams between the phone and the Cisco Unified Communications Manager server, and digitally sign files before they are delivered.
For more information about the security features, see the Security Guide for Cisco Unified Communications Manager.
You can start the installation of a Locally Significant Certificate (LSC) on the device profile from Cisco Unified Communications Manager. Use the menu option. You can also use this menu option to update or remove an LSC.
Before you begin, make sure that the appropriate Cisco Unified Communications Manager and the CAPF security configurations are complete:
On Cisco Unified Communications Operating System Administration, verify that the CAPF certificate has been installed.
The CAPF is running and configured.
See the Security Guide for Cisco Unified Communications Manager for more information.
You can disable Transport Layer Security (TLS) ciphers with the Disable TLS Ciphers parameter. This allows you to tailor your security for known vulnerabilities, and to align your network with your company's policies for ciphers.
None is the default setting.
You can disable more than one cipher suite. If you select all of the TLS ciphers, then ATA TLS service is impacted. ATA has the following choices:
None (default)
TLS_RSA_WITH_AES_128_CBC_SHA
TLS_RSA_WITH_AES_256_CBC_SHA
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
To disable one or more TLS ciphers on CUCM, do the following:
Sign into Cisco Unified Communications Manager Administration as an administrator.
Do one of the following actions as needed:
To configure all deployed ATAs, go to .
To configure ATAs sharing the same phone profile, go to .
To configure an individual ATA, go to .
The precedence order:
Phone Configuration > Common Phone Profile > Enterprise Phone Configuration
Configure the parameter Disable TLS Ciphers to disable one or more TLS ciphers.
Click Save.
Click Apply Config.
The ATA will restart automatically.
You can set up the minimum version of TLS required for client and server respectively.
For more information about the TLS 1.3 compatibility for Cisco ATA 191, see TLS 1.3 Compatibility Matrix for Cisco Collaboration Products.
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Step 1 |
Sign into Cisco Unified Communications Manager Administration as an administrator. |
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Navigate to one of the following windows: The precedence order: Phone Configuration > Common Phone Profile > Enterprise Phone Configuration |
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Step 3 |
Set up the field TLS Client Min Version for the ATA that acts as the TLS client:
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Step 4 |
Set up the field TLS Server Min Version for the ATA that acts as the TLS server (for example, an HTTPs web server):
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Step 5 |
Click Save. |
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Step 6 |
Click Apply Config. |
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Step 7 |
Restart the ATA. |
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