First Published: January 30, 2026

Release Notes

These release notes support the Cisco ATA 191 and 192 Analog Telephone Adapter for Multiplatform Firmware Release 11.3(2).

The following table lists the support and protocol compatibility for the Cisco ATA.

Table 1. Cisco IP Phones, Support, and Firmware Release Compatibility

Cisco IP Phone

Protocol

Support Requirements

Cisco ATA 191 and 192

SIP

BroadSoft BroadWorks 24.0

Asterisk 13.1

Upgrade the Firmware

The Cisco ATA 191 and 192 Multiplatform support dual image upgrades by TFTP, HTTP, or HTTPS.

Procedure

Step 1

Go to the following URL:

https://software.cisco.com/download/navigator.html?mdfid=286282490&flowid=83468

Step 2

Choose Cisco ATA 190 Series Analog Telephone Adapters.

Step 3

Choose your ATA model.

Step 4

In the Latest Releases folder, choose 11.3.2.

Step 5

Download the file ATA19x.11-3-2MPP0001-225.zip.

Step 6

Unzip the files.

Step 7

Put the files on the TFTP/HTTP/HTTPS download directory.

Step 8

Configure the Upgrade Rule on the Provisioning tab in the web page with the valid URL. The format is:

<schema>://<serv_ip[:port]>/filepath/ATA19x.xxxx.img

Here is an example,

http://192.168.1.100/firmware/ATA19x.11-3-2MPP0001-225.img

After the firmware upgrade completes, the phone reboots automatically.

New and Changed Features

FIPS 140-3 Compliance

Your ATA now meets the requirements of Federal Information Porcessing Standards (FIPS) 140-3.

Where to Find More Information

  • Cisco ATA 191 and ATA 192 Analog Telephone Adapter Administration Guide for Multiplatform Firmware

  • Cisco ATA 191 and ATA 192 Analog Telephone Adapter Provisioning Guide for Multiplatform Firmware

New Time Zone Support

Your ATA now supports more time zones for the site where the ATA can be in operation.

To see the newly supported time zones, go to User Interface—Network Setup > Basic Setup > Time Settings page, Time Zone field.

Where to Find More Information

Cisco ATA 191 and ATA 192 Analog Telephone Adapter Provisioning Guide for Multiplatform Firmware

Daylight Saving Time Rule Support

Your ATA now supports to define when to start and end the daylight saving time by rules.

To set a rule to start and end the daylight saving time, go to User Interface—Network Setup > Basic Setup > Time Settings page, Daylight Saving Time Rule field.

Where to Find More Information

  • Cisco ATA 191 and ATA 192 Analog Telephone Adapter Administration Guide for Multiplatform Firmware

  • Cisco ATA 191 and ATA 192 Analog Telephone Adapter Provisioning Guide for Multiplatform Firmware

Caveats

View Caveats

You can search for caveats using the Cisco Bug Search.

Known caveats (bugs) are graded according to severity level, and can be either open or resolved.

Before you begin

To view caveats, you need the following items:

  • Cisco.com user ID and password

Procedure

Step 1

Use this URL for all and resolved caveats: https://bst.cloudapps.cisco.com/bugsearch?pf=prdNm&sb=fr&bt=custV&rls=11.3(2)MPP0001

Step 2

When prompted, log in with your Cisco.com user ID and password.

Step 3

(Optional) Enter the bug ID number in the Search for field, then press Enter.

Open Caveats

There are no open caveats in this release.

Resolved Caveats

The following list contains severity 1, 2, and 3 defects that are resolved for the Cisco ATA 191 and 192 Analog Telephone Adapter Multiplatform Phones for Firmware Release 11.3(2).

For more information about an individual defect, access the Bug Search toolkit and search for the defect using the Identifier. You must be a registered Cisco.com user to access this online information.

Because defect status continually changes, the list reflects a snapshot of the defects that were resolved at the time this report was compiled. For an updated view of open defects, access Bug Toolkit as described in View Caveats.

  • CSCwr56023—ATA is in a crash state after updating the SRV DNS priority and receives a 503 Service unavailable response.

  • CSCwr39832—ATA19x SIP failover stuck at TLS connecting stage.

  • CSCwp22298—ATA19x randomly goes offline due to DNS response packet size over 512 bytes.

Limitations and Restrictions

Phone Behavior During Times of Network Congestion

Anything that degrades network performance can affect phone audio and, in some cases, can cause a call to drop. Sources of network degradation can include, but are not limited to, the following activities:

  • Administrative tasks, such as an internal port scan or security scan.

  • Attacks that occur on your network, such as a Denial of Service attack.

Caller Identification and Other Phone Functions

Caller identification or other phone functions have not been verified with third-party applications for the visually or hearing impaired.