Understanding The Phone Startup Process - Cisco 7965G Administration Manual

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Chapter 2
Preparing to Install the Cisco Unified IP Phone on Your Network

Understanding the Phone Startup Process

When connecting to the VoIP network, the Cisco Unified IP Phone 7965G and 7945G goes through a
standard startup process, as described in
not all of these process steps may occur on your Cisco Unified IP Phone.
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.
5. Accessing a TFTP
Server.
OL-12650-01
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 7965G and 7945G 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 7965G and 7945G 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 7965G and 7945G 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.
In addition to assigning an IP address, the DHCP
server directs the Cisco Unified IP Phone to a
TFTP Server. If the phone has a statically-defined
IP address, you must configure the TFTP server
locally on the phone; the phone then contacts the
TFTP server directly.
You can also assign an alternative TFTP
Note
server to use instead of the one assigned
by DHCP.
Cisco Unified IP Phone 7965G and 7945G Administration Guide for Cisco Unified Communications Manager 6.0
Table
2-4. Depending on your specific network configuration,
Related Topics
See the
"Providing
Power to the Phone"
section on page
See the
"Resolving
Startup Problems"
section on page
See the
"Resolving
Startup Problems"
section on page
See the
"Network
Configuration Menu"
section on page
See the
"Resolving
Startup Problems"
section on page
See the
"Network
Configuration Menu"
section on page
See the
"Resolving
Startup Problems"
section on page
See the
"Network
Configuration Menu"
section on page
See the
"Resolving
Startup Problems"
section on page
Understanding the Phone Startup Process
2-3.
9-2.
9-2.
4-5.
9-2.
4-5.
9-2.
4-5.
9-2.
2-7

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