Cisco 7906G Administration Manual page 66

Understanding the Phone Startup Process
Table 2-3 Cisco Unified IP Phone Startup Process
Step
1. Obtaining Power
from the Switch.
Loading the Stored
2.
Phone Image.
Configuring
3.
VLAN.
Obtaining an IP
4.
Address.
Cisco Unified IP Phone 7906G and 7911G Administration Guide for Cisco Unified CallManager
2-8
Chapter 2
Description
If a phone is not using external power, the switch
provides in-line power through the Ethernet cable
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 a third-party switch is used and VLANs are
configured, the VLAN on the phone must be
manually configured.
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
Related Topics
See the "Providing
Power to the
Cisco Unified IP Phone
s 7906G and 7911G"
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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