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Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SCCP)
OL-3141-01
Chapter 3 Configuring the Cisco ATA for SCCP
Default Boot Load Behavior
• Cisco ATA Web Configuration Page, page 3-21—This section shows the Cisco ATA Web
configuration page and contains a procedure for how to configure Cisco ATA parameters using this
interface.
• Resetting the Cisco ATA Using Cisco CallManager, page 3-23—This section gives the procedure
(via the Cisco CallManager administration web pages) for resetting the Cisco ATA so that your
configuration changes take effect.
• Upgrading the SCCP Signaling Image, page 3-24—This section provides references to the various
means of upgrading your Cisco ATA signaling image.
Note The term Cisco ATA is used throughout this manual to refer to both the Cisco ATA 186 and the
Cisco ATA 188, unless differences between the Cisco ATA 186 and Cisco ATA 188 are explicitly stated.
Default Boot Load Behavior
Before configuring the Cisco ATA, you need to know how the default Cisco ATA boot load process
works. Once you understand this process, you will be able to configure the Cisco ATA by following the
instructions provided in this section and in the sections that follow.
All Cisco ATAs are shipped with a boot load signaling-protocol image. However, because this image is
not a fully functional Cisco ATA image, the Cisco ATA seeks to obtain the image-load information from
the Cisco CallManager and perform a software upgrade. In addition, the Cisco ATA obtains the
necessary SCCP-specific configuration files for Cisco CallManager communication and the Cisco ATA
configuration file during the boot load process.
The following list summarizes the default Cisco ATA behavior during its boot-up process:
1. The Cisco ATA uses the Cisco Discovery Protocol (CDP) to discover which VLAN to enter. If the
Cisco ATA receives a VLAN ID response from the network switch, the Cisco ATA enters that VLAN
and adds 802.1Q VLAN tags to its IP packets. If the Cisco ATA does not receive a response with a
VLAN ID from the network switch, then the Cisco ATA assumes it is not operating in a VLAN
environment and does not perform VLAN tagging on its packets.
Note If your network environment is not set up to handle this default behavior, make the necessary
configuration changes by referring to the “Specifying a Preconfigured VLAN ID or Disabling
VLAN IP Encapsulation” section on page 3-3.
2. The Cisco ATA contacts the DHCP server to request its own IP address.
Note If your network environment does not contain a DHCP server, you need to statically configure
various IP addresses so that the Cisco ATA can obtain network connectivity. For a list of
parameters that you must configure to obtain network connectivity, see Table 3-6 on page 3-19.
For instructions on how to use the voice configuration menu, which you must use to perform this
configuration, see the “Voice Configuration Menu” section on page 3-18.
3. Also from the DHCP server, the Cisco ATA requests the IP address of the Cisco CallManager TFTP
server.