Cisco Unified Wireless Ip Phone 7925G, 7925G-Ex, And 7926G Administration Guide - Cisco 7925G Administration Manual

VoIP Wireless Network
Network protocol
Dynamic Host
Configuration
Protocol (DHCP)
Internet Protocol (IP)
Real-Time Control
Protocol (RTCP)
Real-time Protocol
(RTP)
Skinny Call Control
Protocol (SCCP)
Transmission Control
Protocol (TCP)
Trivial File Transport
Protocol (TFTP)
Purpose
Dynamically allocates and assigns an
IP address to network devices.
DHCP enables an IP phone to connect
to the network and become operational
without the administrator assigning an
IP address or configuring additional
network parameters.
Messaging protocol that addresses and
sends packets across the network.
Used with the RTP protocol to provide
control over the transporting of
real-time data, such as interactive
voice and video, over data networks.
Standard for transporting real-time
data, such as interactive voice and
video, over data networks.
Uses Cisco-proprietary messages to
communicate between IP devices and
Cisco Unified Communications
Manager, Release 4.3 or later.
Connection-oriented transport
protocol.
Method for transferring files over the
network.
On the Cisco Unified
Wireless IP Phone, TFTP enables you
to obtain a configuration file specific
to the phone type.

Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Administration Guide

Network Protocols
Usage notes
DHCP is enabled by default. If disabled, you
must manually configure the IP address,
subnet mask, gateway, and an TFTP server
on each phone locally.
Use DHCP custom option 150. With this
method, you configure the TFTP server IP
address as the option value. For additional
supported DHCP configurations, see Cisco
Unified Communications Manager System
Guide.
To communicate using IP, network devices
must have an assigned IP address, subnet, and
gateway.
IP addresses, subnet, and gateway
identification are automatically assigned if
you are using the Cisco Unified IP Phone
with DHCP. If you are not using DHCP, you
must manually assign these properties to each
phone locally.
Cisco Unified Wireless IP Phones use the
RTCP protocol to allow monitoring of the
data delivery and minimal control and
identification functionality.
Cisco Unified Wireless IP Phones use the
RTP protocol to send and receive real-time
voice traffic from other phones and gateways.
Cisco Unified Wireless IP Phones use SCCP
protocol for VoIP call signaling and enhanced
features such as Message Waiting Indication
(MWI).
Cisco Unified Wireless IP Phones use TCP
to connect to Cisco Unified Communications
Manager and to access XML services.
You must have a TFTP server in your
network that the DHCP server automatically
identifies. If more than one TFTP server is
running in your network, you must manually
assign a TFTP server to each phone.
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