2-2
Cisco Unified IP Phone 7960G/7940G Administration Guide for Cisco Unified Communications Manager 7.0 (SIP)
OL-15499-01
Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
Understanding Interactions with Other Cisco Unified IP Telephony Products
Understanding How the Cisco Unified IP Phone Interacts with Cisco
Unified
Communications Manager
Cisco Unified Communications Manager is an open and industry-standard call processing system.
Cisco
Unified Communications Manager software sets up and tears down calls between phones,
integrating traditional PBX functionality with the corporate IP network. Cisco
Unified Communications
Manager 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
Communications Manager also provides:
• Firmware for phones
• Authentication and encryption (if configured for the telephony system)
• Configuration file and CTL file, via TFTP service
• Phone registration
• Call preservation, so that a media session continues if signaling is lost between the primary Cisco
Unified Communications Manager and a phone)
For information about configuring Cisco Unified Communications Manager to work with the IP devices
described in this chapter, refer to Cisco Unified
Communications Manager Administration Guide, Cisco
Unified Communications Manager System Guide, and to Cisco Unified Communications Manager
Security Guide.
For an overview of security functionality for the Cisco Unified IP Phone, see the “Understanding
Security Features for Cisco Unified IP Phones” section on page 1-7.
Note If the Cisco Unified IP Phone model that you want to configure does not appear in the Phone Type
drop-down list in Cisco
Unified Communications Manager Administration, go to the following URL and
install the latest support patch for your version of Cisco
Communications Manager:
http://www.cisco.com/kobayashi/sw-center/sw-voice.shtml
Related Topic
• Telephony Features Available for the Cisco Unified IP Phone, page 5-2
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 proper
forwarding of appropriate packets to the phone, to the access port (labeled 10/100 PC on the phone), and
to the network port (labeled 10/100 SW on 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 addresses
might not be available to assign the phone to the same subnet as other devices connected to the same
port.
• Data traffic present on the VLAN supporting phones might 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.
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