BootP
(Bootstrap Protocol)
|
Enables a
network device such as Cisco IP Communicator to discover certain startup
information, such as its IP address.
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If you are
using BootP to assign IP addresses to Cisco IP Communicator, the BOOTP Server
option shows “Yes” in the network configuration settings on the phone.
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CDP(Cisco
Discovery Protocol)
|
Device-discovery protocol that runs on all Cisco-manufactured
equipment.
By using
CDP, a device can advertise its existence to other devices and receive
information about other devices in the network.
|
Cisco IP
Communicator uses CDP to communicate information such as auxiliary VLAN ID,
per-port power management details, and QoS (quality of service) configuration
information with the Cisco Catalyst switch.
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DHCP
(Dynamic Host Configuration Protocol)
|
Dynamically allocates and assigns an IP address to network
devices.
DHCP
enables you to connect Cisco IP Communicator into the network and have it
become operational without you manually assigning an IP address or configuring
additional network parameters.
|
We
recommend that you use DHCP custom option 150. With this method, you configure
the TFTP server IP address as the option value. For additional supported DCHP
configurations, see the
Cisco Unified Communications Manager System Guide at
this URL:
http://www.cisco.com/en/us/products/sw/voicesw/ps556/prod_maintenance_guides_list.html
|
HTTP
(HyperText Transfer Protocol)
|
Uses TCP
to transfer web content over the Internet.
|
Cisco IP
Communicator uses HTTP to obtain the configuration file, LDAP directories
configuration, dialing rules, XML services, and locale strings.
|
IP
(Internet Protocol)
|
Messaging
protocol that addresses and sends packets across the network.
|
To
communicate by using IP, network devices must have an assigned IP address,
subnet, and gateway.
Cisco IP
Communicator obtains its IP information from the system network configuration.
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LDAP
(Lightweight Directory Access Protocol)
|
Protocol
for accessing directories.
|
Cisco IP
Communicator can use LDAP to search for names and phone numbers.
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RTP
(Real-Time Transport Protocol)
|
Standard
protocol for transporting real-time data, such as interactive voice and video,
over data networks.
|
Cisco IP
Communicator uses the RTP to receive from and send real-time voice traffic to
other Cisco IP Communicators and gateways.
|
RTCP
(Real-Time Control Protocol)
|
RTCP works
with Real-Time Transport Protocol (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 using Cisco
Unified Communications Manager.
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SDP
(Session Description Protocol)
|
Portion of
the SIP protocol that determines which parameters are available during a
connection between two endpoints. Conferences are established by using only the
SDP capabilities that are supported by all endpoints in the conference.
|
SDP
capabilities (such as codec types, DTMF detection, and comfort noise) are
normally configured on a global basis by Cisco Unified Communications Manager
or the Media Gateway in operation. Some SIP endpoints might allow these
parameters to be configured on the endpoint. This might vary from vendor to
vendor.
|
SCCP
(Skinny Client Control Protocol)
|
Includes a
messaging set that allows communications between call control servers and
endpoint clients such as IP Phones. SCCP is proprietary to Cisco Systems.
|
Cisco IP
Communicator can use either SCCP or SIP.
|
SIP
(Session Initiation Protocol)
|
Standard
for setting up telephone calls, multimedia conferencing, and other types of
communications on the Internet.
SIP can be
used to establish, maintain, and terminate calls between two or more endpoints.
SIP provides signaling, which allows call information to be carried across
network boundaries. SIP provides session management, which controls the
attributes of an end-to-end call.
|
Cisco IP
Communicator can use either SCCP or SIP.
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TCP
(Transmission Control Protocol)
|
Connection-oriented transport protocol.
|
Cisco IP
Communicator uses TCP to connect to Cisco Unified Communications Manager and to
access XML services.
|
TFTP
(Trivial File Transfer Protocol)
|
Allows you
to transfer files over the network.
On Cisco
IP Communicator, TFTP enables you to obtain a configuration file specific to
the phone type.
|
TFTP
requires a TFTP server in your network, which can be automatically identified
from the DHCP server. If you want Cisco IP Communicator to use a TFTP server
other than the one specified by the DHCP server, you must manually assign the
TFTP server in Cisco IP Communicator.
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TLS
(Transport Layer Security)
|
Standard
protocol for securing and authenticating communications.
|
When
security is implemented, Cisco IP Communicator uses the TLS protocol when
securely registering with Cisco Unified Communications Manager.
|
UDP (User
Datagram Protocol)
|
Connectionless messaging protocol for delivery of data packets.
|
Cisco IP
Communicator transmits and receives RTP streams, which uses UDP.
|