Cisco Ip Phone 7800 Series Administration Guide For Cisco Unified Communications Manager - Cisco 7800 series Administrator's Manual

Supported Network Protocols
Network Protocol
Internet Protocol (IP)
Link Layer Discovery
Protocol (LLDP)
Link Layer Discovery
Protocol-Media Endpoint
Devices (LLDP-MED)
Real-Time Transport
Protocol (RTP)
Real-Time Control
Protocol (RTCP)

Cisco IP Phone 7800 Series Administration Guide for Cisco Unified Communications Manager

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Purpose
IP is a messaging protocol that addresses
and sends packets across the network.
LLDP is a standardized network
discovery protocol (similar to CDP) that
is supported on some Cisco and
third-party devices.
LLDP-MED is an extension of the LLDP
standard developed for voice products.
RTP is a standard protocol for
transporting real-time data, such as
interactive voice and video, over data
networks.
RTCP works in conjunction with RTP to
provide QoS data (such as jitter, latency,
and round trip delay) on RTP streams.
Usage Notes
To communicate with IP, network
devices must have an assigned IP
address, subnet, and gateway.
IP addresses, subnets, and gateways
identifications are automatically
assigned if you are using the Cisco
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 IP Phones support IPv6
address. For more information, see
the documentation for your particular
Cisco Unified Communications
Manager release.
The Cisco IP Phone supports LLDP
on the PC port.
The Cisco 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 at this URL:
http://www.cisco.com/en/US/tech/
tk652/tk701/technologies_white_
paper0900aecd804cd46d.shtml
Cisco IP Phones use the RTP
protocol to send and receive real-time
voice traffic from other phones and
gateways.
RTCP is enabled by default.