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
•Firmware for phones
•Configuration file via TFTP service
•Phone registration
•Call preservation, so that a media session continues if signaling is lost between the primary Communications Manager and a phone
For information about configuring Cisco Unified Communications Manager to work with the IP devices described in this chapter, go to the Cisco Unified IP Phone Configuration chapter in the Cisco Unified Communications Manager Administration 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
Note If the Cisco Unified IP Phone model that you want to configure does not appear in the Phone Type
http://www.cisco.com/cisco/software/navigator.html?mdfid=268439621&catid=2788752
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For more information, refer to “Software Upgrades” chapter in the Cisco Unified Communications Operating System Administration Guide.
Related Topic
•Telephony Features Available for the Cisco Unified IP Phone, page
Understanding How the Cisco Unified IP Phone Interacts with the VLAN
The Cisco Unified IP Phone 6921, 6941, and 6961 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 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
•Network security may indicate a need to isolate the VLAN voice traffic from the VLAN data traffic.
Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 7.1 (SCCP)
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