Preparing to Install the
Cisco Unified IP Phone on Your
Network
Cisco Unified IP Phones enable you to communicate using voice over a data
network. To provide this capability, the Cisco Unified IP Phones depend upon and
interact with several other key Cisco Unified IP Telephony and network
components.
This chapter focuses on the interactions between the Cisco Unified IP Phone
7960G and 7940G and Cisco Unified CallManager, DNS and DHCP servers,
TFTP servers, and switches. It also describes options for powering phones. For
related information about other major components in a Voice over IP (VoIP)
network, refer to Cisco IP Telephony Solution Reference Network Design (SRND) for Cisco Unified CallManager 4.0, which is available at this URL:
http://www.cisco.com/go/srnd
For related information about voice and IP communications, refer to this URL:
This chapter provides an overview of the interaction between the
Cisco Unified IP Phone 7960G and 7940G and other key components of the Voice
over IP (VoIP) network and includes these topics:
• Understanding Interactions with Other Cisco Unified IP Telephony Products,
page 2-2
• Providing Power to the Cisco Unified IP Phone, page 2-4
Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 4.2, Cisco Unified IP Phones
OL-8555-01
2-1
Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
Understanding the Phone Startup Process
• Understanding the Phone Startup Process, page 2-7
• Methods for Adding Phones to the Cisco Unified CallManager Database,
page 2-10
• Determining the MAC Address of a Cisco Unified IP Phone, page 2-14
Understanding Interactions with Other
Cisco Unified IP Telephony Products
To function in the IP telephony network, the Cisco Unified IP Phone must be
connected to a networking device, such as a Cisco Catalyst switch. You must also
register the Cisco Unified IP Phone with a Cisco Unified CallManager system
before sending and receiving calls.
This section covers the following topics:
• Understanding How the Cisco Unified IP Phone Interacts with
Cisco Unified CallManager, page 2-2
• Understanding How the Cisco Unified IP Phone Interacts with the VLAN,
page 2-3
Understanding How the Cisco Unified IP Phone Interacts with
Cisco Unified CallManager
Cisco Unified CallManager is an open and industry-standard call processing
system. Cisco Unified CallManager software runs on a Windows 2000 server and
sets up and tears down calls between phones, integrating traditional PBX
functionality with the corporate IP network. Cisco Unified CallManager manages
the components of the IP telephony system—the phones, the access gateways, and
the resources necessary for such features as call conferencing and route planning.
Cisco Unified CallManager also provides:
• Firmware for phones
• Authentication and encryption (if configured for the telephony system)
• Configuration file and CTL file, via TFTP service
Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 4.2, Cisco Unified IP Phones
2-8
OL-8555-01
Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
• Phone registration
• Call preservation, so that a media session continues if signaling is lost
between the primary CallManager and a phone)
For information about configuring Cisco Unified CallManager to work with the
IP devices described in this chapter, refer to Cisco Unified CallManager
Administration Guide, Cisco Unified CallManager System Guide, and to
Cisco Unified CallManager Security Guide.
For an overview of security for the Cisco Unified IP Phone, see the
“Understanding Security Features for Cisco Unified IP Phones” section on
page 1-12.
NoteIf the Cisco Unified IP Phone model that you want to configure does not appear
in the Phone Type drop-down list in Cisco Unified CallManager Administration,
go to the following URL and install the latest support patch for your version of
Cisco Unified CallManager:
• Telephony Features Available for the Phone, page 5-2
Understanding the Phone Startup Process
Understanding How the Cisco Unified IP Phone Interacts with
the VLAN
The Cisco Unified IP Phone 7960G and 7940G have an internal Ethernet switch,
enabling forwarding of packets to the phone, and to the access port and the
network port on the back of the phone.
If a computer is connected to the access port, the computer and the phone share
the same physical link to the switch and share the same port on the switch. This
shared physical link has the following implications for the VLAN configuration
on the network:
• The current VLANs might be configured on an IP subnet basis. However,
additional IP address might not be available to assign the phone to the same
subnet as other devices connect to the same port.
Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 4.2, Cisco Unified IP Phones
OL-8555-01
2-9
Understanding the Phone Startup Process
• Data traffic present on the data/native VLAN may reduce the quality of
Voice-over-IP traffic.
• Network security may indicate a need to isolate the VLAN voice traffic from
the VLAN data traffic.
You can resolve these issues by isolating the voice traffic onto a separate VLAN.
The switch port that the phone is connected to would be configured to have
separate VLANs for carrying:
• Voice traffic to and from the IP phone (auxiliary VLAN, on the Cisco Catalyst
6000 series, for example)
• Data traffic to and from the PC connected to the switch through the access
port of the IP phone (native VLAN)
Isolating the phones on a separate, auxiliary VLAN improves the quality of the
voice traffic and allows a large number of phones to be added to an existing
network where there are not enough IP addresses for each phone.
For more information, refer to the documentation included with a Cisco switch.
You can also access related documentation at this URL:
Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
Related Topics
• Understanding the Phone Startup Process, page 2-7
• Network Configuration Menu Options, page 4-3
Providing Power to the Cisco Unified IP Phone
You can power a Cisco Unified IP Phone from an external power supply, from a
switch port, or from a power source between the phone and the switch.
The Cisco Unified IP Phone can be powered by the following sources:
• External power source—Optional Cisco AC adapter and power cord for
connecting to a standard wall receptacle.
• WS-X6348-RJ45V 10/100 switching module—Inline power provider to the
Cisco Unified IP Phone when connected to a Catalyst 6000 family
10/100BaseTX switching module.
Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 4.2, Cisco Unified IP Phones
2-8
OL-8555-01
Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
This module sends power on pins 1 & 2 and 3 & 6, which are also used to
transmit Ethernet signals. Before the switch sends power, it tests for the
presence of a Cisco Unified IP Phone, avoiding damage to other Ethernet
devices.
NoteOnly the network port supports inline power from the
Cisco Catalyst switches.
• WS-PWR-PANEL—Power patch panel that allows the
Cisco Unified IP Phone to be connected to existing Catalyst 4000, 5000, and
6000 family 10/100BaseTX switching modules.
This module sends power on pins 4, 5, 7, & 8, which are not used for Ethernet
signaling. Like the inline power, the power patch panel also attempts to verify
that the attached device is a Cisco Unified IP Phone before providing power.
Related Topics
• Power Outage, page 2-5
• Understanding Interactions with Other Cisco Unified IP Telephony Products,
page 2-2
• Installing the Cisco Unified IP Phone, page 3-8
Understanding the Phone Startup Process
Power Outage
Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 4.2, Cisco Unified IP Phones
OL-8555-01
Your accessibility to emergency service through the phone is dependent on the
phone being powered. If there is an interruption in the power supply, Service and
Emergency Calling Service dialing will not function until power is restored. In the
case of a power failure or disruption, you may need to reset or reconfigure
equipment before using the Service or Emergency Calling Service dialing.
Related Topics
• Understanding Interactions with Other Cisco Unified IP Telephony Products,
page 2-2
• Providing Power to the Cisco Unified IP Phone, page 2-4
• Installing the Cisco Unified IP Phone, page 3-8
2-9
Loading...
+ 9 hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.