Yealink CPE80, Administrator'S Manual

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Administrator’s Guide for Yealink VC110 Video Conferencing Endpoint
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4.
Select
Enabled
from the pull-down list of
H.460 Active
.
5.
Click
Confirm
to accept the change.
To configure H.460 firewall traversal via the remote control:
1.
Select
Menu
->
Advanced
(default password: 0000) ->
H.323
.
2.
Select
Manual Settings
from the pull-down list of
Gatekeeper Type
.
3.
Enter the IP address and port number of the H.460 server in
Gatekeeper Server
and
Gatekeeper Port
fields.
4.
Check the
H.460 Active
checkbox.
5.
Press the
Save
soft key to accept the change.
DTMF
DTMF (Dual Tone Multi-frequency), better known as touch-tone, is used for telecommunication
signaling over analog telephone lines in the voice-frequency band. DTMF is the signal sent from
the IP phone to the network, which is generated when pressing the keypad during a call. Each
key pressed on the IP phone generates one sinusoidal tone of two frequencies. One is
generated from a high frequency group and the other from a low frequency group.
The DTMF keypad is laid out in a 4×4 matrix, with each row representing a low frequency, and
each column representing a high frequency. Pressing a digit key (such as '1') will generate a
sinusoidal tone for each of two frequencies (697 and 1209 hertz (Hz)).