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5 IP Telephony
Introduction to IP Telephony
IP telephony, namely voice over Internet Protocol (VoIP), is also called broadband telephony or
Internet telephony. It utilizes Internet Protocol (IP) network technologies to implement voice
communication. During a VoIP call, voice signals are digitized, encoded, packetized, and transmitted
as packets over a network. On the receiving side, the packets are then decoded, and digital signals
are converted to reproduce the original voice streams, which can be heard by the called party. Different
from traditional PSTN calls, VoIP calls are transported over IP networks, meaning voice streams are
transmitted over users' existing broadband Internet. This makes full use of broadband resources.
Configuring VoIP
The HG552e supports VoIP. You can place VoIP calls after your phone is connected to the PHONE
port on the HG552e.
To use the HG552e to place VoIP calls, ask your network service provider to activate VoIP
services for you. By default, your network service provider will have all related parameters,
such as the VoIP account and address, set for you. You will not need to configure any settings
to place VoIP calls.
Placing a VoIP Call
Once your network service provider has activated VoIP services for you, you will be assigned a VoIP
account, which is also your VoIP call number.
Before placing a VoIP call, ensure that the HG552e has connected to the network. When the call is
established, your VoIP call number is displayed on the called party's phone.
For VoIP call tariffs, contact your network service provider.
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