Prepare to Install the ATA 191 on Your Network
Start up Process with Standby Image
The ATA 191 has two images or partitions in permanent storage. The second image allows the device to
recover if the initial image is corrupted.
Press the PRT button when the power is on, and you switch to the standby partition. Startup is similar to the
normal process, except that the LED for Phone 2 flashes amber indicating that the second partition is being
used.
Related Topics
Startup Process Verification, on page 23
Addition of the ATA 191 to the Cisco Unified CM Database
Before you install the ATA 191, choose a method for adding the devices to the Cisco Unified Communications
Manager database.
The following table provides an overview of these methods for adding the ATA 191 to the
Cisco Unified Communications Manager database.
Table 4: Add the ATA to the Cisco Unified Communications Manager Database
Method
Autoregistration
Using the Cisco Unified
Communications Manager
Administration
Addition with Autoregistration
By enabling autoregistration before you begin installing the ATA 191, you can:
• Automatically add devices without first gathering MAC addresses from the ATA 191.
• Automatically add an ATA 191 to the Cisco Unified Communications Manager database when you
• To change any settings, quickly enter devices into the Cisco Unified Communications Manager database
• Move autoregistered devices to new locations and assign them to different device pools without affecting
Requires MAC
Address?
No
Yes
physically connect the phone to your IP telephony network. During autoregistration, Cisco Unified
Communications Manager assigns the next available sequential directory number to the phone.
and modify settings, such as directory numbers, from Cisco Unified Communications Manager.
their directory numbers.
Cisco ATA 191 Analog Telephone Adapter Administration Guide for Cisco Unified Communications Manager
Start up Process with Standby Image
Notes
Results in automatic assignment of directory numbers.
Not available when mixed mode is enabled.
Requires phones to be added individually.
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