Cisco 7941G - Unified IP Phone VoIP User Manual

Chapter 1 An Overview of the Cisco Unified IP Phone
What Networking Protocols are Used?
1-8
Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE for Cisco Unified Communications Manager 6.1
OL-14620-01
Link Layer Discovery
Protocol-Media
Endpoint Devices
(LLDP-MED)
LLDP-MED is an extension of the
LLDP standard developed for voice
products.
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/tk
652/tk701/technologies_white_pape
r0900aecd804cd46d.shtml
Real-Time Transport
Protocol (RTP)
RTP is a standard protocol for
transporting real-time data, such as
interactive voice and video, over data
networks.
Cisco Unified IP Phones use the RTP
protocol to send and receive
real-time voice traffic from other
phones and gateways.
Real-Time Control
Protocol (RTCP)
RTCP works in conjunction with
RTP to provide QoS data (such as
jitter, latency, and round trip delay)
on RTP streams.
RTCP is disabled by default, but you
can enable it on a per phone basis by
using
Cisco
Unified Communications
Manager Phone Configuration. For
more information, see the
“Network
Configuration Menu” section on
page 4-40.
Table 1-1 Supported Networking Protocols on the Cisco Unified IP Phone (continued)
Networking Protocol Purpose Usage Notes

Cisco 7941G - Unified IP Phone VoIP Specifications

General

Brand	Cisco
Model	7941G - Unified IP Phone VoIP
Category	IP Phone
Language	English