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Providing Power to the ATA 190
Understanding How the ATA 190 Interacts with Cisco Unified Communications
Manager
Cisco Unified Communications Manager is an open and industry-standard call processing system.
Cisco Unified Communications Manager software sets up and tears down calls between phones
connected to the ATA 190, integrating traditional PBX functionality with the corporate IP network.
Cisco Unified Communications Manager manages the components of the IP telephony system—the
phones, the access gateways, and the resources necessary for features such as call conferencing and route
planning. Cisco Unified Communications Manager also provides:
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For information about configuring Cisco Unified Communications Manager to work with the IP devices
described in this chapter, see Cisco Unified Communications Manager Administration Guide, Cisco
Unified Communications Manager System Guide, and Cisco Unified Communications Manager Security
Guide.
Providing Power to the ATA 190
The ATA 190 is powered with external power. External power is provided through a separate power
supply.
The following sections provide more information about powering a ATA 190:
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Power Guidelines
The following power type and guideline applies to external power for the ATA 190:
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Power Outage
Your accessibility to emergency service through the phone is dependent on the phone being powered. If
there is an interruption in the power supply, Service and Emergency Calling Service dialing will not
function until power is restored. In the case of a power failure or disruption, you may need to reset or
reconfigure equipment before using the Service or Emergency Calling Service dialing.
Cisco ATA 190 Analog Telephone Adaptor Administration Guide for SIP (Version 1.0)
2-2
Firmware for devices
Authentication and encryption (if configured for the telephony system)
Configuration and CTL files via the TFTP service
Phone registration
Call preservation, so that a media session continues if signaling is lost between the primary
Communications Manager and a phone
Power Guidelines, page 2-2
Power Outage, page 2-2
Understanding Phone Configuration Files, page 2-3
Power Type—External power (Provided through the Universal AC external power supply.)
Guidelines—The ATA 190 uses the Universal AC power supply 110/240V
Chapter 2
Preparing to Install the ATA 190 on Your Network
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