Understanding The Phone Startup Process - Cisco 7970G - IP Phone VoIP Administration Manual

Understanding the Phone Startup Process

Understanding the Phone Startup Process
Table 2-4 Cisco Unified IP Phone Startup Process
Process Step
1. Obtaining Power
from the Switch.
2. Loading the Stored
Phone Image.
3. Configuring VLAN.
4. Obtaining an IP
Address.
Cisco Unified IP Phone 7970G/7971G-GE Administration Guide for Cisco Unified Communications Manager 6.1
2-10
Chapter 2
When connecting to the VoIP network, the Cisco Unified IP Phone goes through
a standard startup process, as described in
network configuration, not all of these process steps may occur on your
Cisco Unified IP Phone.
Description
If a phone is not using external power, the
switch provides in-line power through the
Ethernet cable that is attached to the phone.
The Cisco Unified IP Phone 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.
If the Cisco Unified IP Phone is connected to a
Cisco switch, the switch next informs the phone
of the voice VLAN defined on the switch port.
The phone needs to know its VLAN
membership before it can proceed with the
Dynamic Host Configuration Protocol (DHCP)
request for an IP address.
If the Cisco Unified IP Phone is using DHCP to
obtain an IP address, the phone queries the
DHCP server to obtain one. If you are not using
DHCP in your network, you must assign static
IP addresses to each phone locally.
Preparing to Install the Cisco Unified IP Phone on Your Network
Table 2-4. Depending on your specific
Related Topics
See the "Providing Power
to the Phone" section on
page 2-4.
See the "Resolving
Startup Problems" section
on page 9-2.
See the "Resolving
Startup Problems" section
on page 9-2.
See the "Network
Configuration Menu"
section on page 4-7.
See the "Resolving
Startup Problems" section
on page 9-2.
See the "Network
Configuration Menu"
section on page 4-7.
See the "Resolving
Startup Problems" section
on page 9-2.
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