Usage notesPurposeNetwork protocol
To communicate using IP, network
devices must have an assigned IP
address, subnet, and gateway.
IP addresses, subnets, and gateway
identifications are automatically
assigned if you are using the Cisco
Unified IP Phone with Dynamic
Host Configuration Protocol
(DHCP). If you are not using
DHCP, you must manually assign
these properties to each phone
locally.
The Cisco Unified IP Phones
support IPv6 addresses. For more
information, see Cisco Unified
Communications Manager
Features and Services Guide,
“Internet Protocol Version 6
(IPv6)” chapter.
IP is a messaging protocol that addresses and sends packets
across the network.
Internet Protocol (IP)
The Cisco Unified IP Phone
supports LLDP on the PC port.
LLDP is a standardized network discovery protocol (similar
to CDP) that is supported on some Cisco and third-party
devices.
Link Layer Discovery Protocol
(LLDP)
The Cisco Unified IP Phone
supports LLDP-MED on the SW
port to communicate information
such as:
•
Voice VLAN configuration
•
Device discovery
•
Power management
•
Inventory management
For more information about
LLDP-MED support, see the
LLDP-MED and Cisco Discovery
Protocol white paper:
http://www.cisco.com/en/US/tech/
tk652/tk701/technologies_white_
paper0900aecd804cd46d.shtml
LLDP-MED is an extension of the LLDP standard for voice
products.
Link Layer Discovery
Protocol-Media Endpoint
Devices (LLDP-MED)
Cisco Unified IP Phones use the
RTP protocol to send and receive
real-time voice traffic from other
phones and gateways.
RTP is a standard protocol for transporting real-time data,
such as interactive voice and video, over data networks.
Real-Time Transport Protocol
(RTP)
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 10.0
11
Network Protocols
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