Cisco Systems ATA187I1ARF manual Understanding the ATA 187 Startup Process, Purpose Related Topics

Chapter 2 Preparing to Install the ATA 187 on Your Network

Understanding the ATA 187 Startup Process

–No support > for configuring termination key

–No support + dial pattern which contains + will be ignored

–Maximum length of match string is 196

–Maximum length of a dial pattern is 4095

–Maximum rule set in one dial pattern is 100

The filenames are derived from the MAC Address and Description fields in the Phone Configuration window of Cisco Unified Communications Manager Administration. The MAC address uniquely identifies the phone. For more information see the Cisco Unified Communications Manager Administration Guide.

For more information about how the phone interacts with the TFTP server, see the Cisco Unified Communications Manager System Guide, Cisco TFTP section.

Understanding the ATA 187 Startup Process

When connecting to the VoIP network, the ATA 187 goes through a standard startup process, as described in Table 2-1. Depending on your specific network configuration, not all of these process steps may occur on your ATA 187.

Table 2-1	ATA 187 Startup Process
Task	Purpose	Related Topics
1.	Obtaining Power.	See Providing Power to the ATA 187, page 2-2.
	The ATA 187 uses external power.
2.	Loading the Stored Image.
	The ATA 187 has non-volatile flash memory in which it
	stores firmware images and user-defined preferences. At
	startup, the phone runs a bootstrap loader that loads a
	phone image stored in flash memory. Using this image, the
	phone initializes its software and hardware.
3.	Obtaining an IP Address.
	If the ATA 187 is using DHCP to obtain an IP address, the
	device queries the DHCP server to obtain one. If you are
	not using DHCP in your network, you must assign static IP
	addresses to each device locally.
4.	Requesting the CTL file.	See the Cisco Unified Communications Manager
	The TFTP server stores the CTL file. This file contains the	Security Guide, Configuring the Cisco CTL
	certificates necessary for establishing a secure connection	Client.
	between the device and Cisco Unified Communications
	Manager.

Cisco ATA 187 Analog Telephone Adaptor Administration Guide for SIP (Version 1.0)

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