Yealink CP860 Administrator's Guide

Administrator’s Guide for CP860 IP conference phones
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Network Address Translation (NAT) is essentially a translation table that maps public IP
address and port combinations to private ones. This reduces the need for a large
number of public IP addresses. The NAT feature ensures security since each outgoing or
incoming request must first go through a translation process. But in the VoIP environment,
NAT breaks end-to-end connectivity.
NAT Traversal
NAT traversal is a general term for techniques that establish and maintain IP
connections traversing NAT gateways, typically required for client-to-client networking
applications, especially for VoIP deployments. STUN is one of the NAT traversal
techniques supported by IP phones.
STUN (Simple Traversal of UDP over NATs)
STUN is a network protocol, used in NAT traversal for applications of real-time voice,
video, messaging, and other interactive IP communications. The STUN protocol allows
applications to operate behind a NAT to discover the presence of the network address
translator, and to obtain the mapped (public) IP address and port number that the NAT
has allocated for the UDP connections to remote parties. The protocol requires
assistance from a third-party network server (STUN server) usually located on public
Internet. The IP phone can be configured to act as a STUN client, sending exploratory
STUN messages to the STUN server. The STUN server uses those messages to determine
the public IP address and port used, and then informs the client.
Procedure
NAT traversal and STUN server can be configured using the configuration files or locally.
Configuration File
<MAC>.cfg
Configure NAT traversal and
STUN server on the IP phone.
Parameters:
account.X.nat.nat_traversal
account.X.nat.stun_server
account.X.nat.stun_port
Local
Web User Interface
Configure NAT traversal and
STUN server on the IP phone.
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-register&q=load
&acc=0

Yealink CP860 Specifications

General

Speakerphone	Yes
Voice codecs	G.711, G.722, G.729ab, iLBC
Handset type	-
Product type	IP Phone
Product color	Black
Display resolution	192 x 64 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	1
Networking standards	IEEE 802.1x, IEEE 802.3af
Supported network protocols	IPv4/IPv6
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
AC adapter input voltage	100 - 240 V
AC adapter output current	2 A
AC adapter output voltage	5 V
Number of handles included	- pc(s)
Storage temperature (T-T)	10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %

Weight and Dimensions

Depth	260 mm
Width	320 mm
Height	52 mm