What You Need To Know - Huawei B2368 Series User Manual

LTE CPE B2368 User's
Guide

15.1.1 What You Need to Know

Before reading this chapter is to be familiar with the following terms.
VoIP
Voice over Internet Protocol (VoIP acronym) is a technology that allows the transmission of digitized voice
packets in the body of the family of protocols UDP / TCP / IP. This transfer is realized via computer networks
or other media transparent to IP. It is used for making phone calls over the Internet, an intranet, or any other
data connection.
ARROW
Acronym SIP is a Session Initiation Protocol, Czech Session Initiation Protocol. It is an Internet protocol for
transmitting signaling between Internet telephony network devices. Within the VoIP signaling they are meant
phone calls. For example, when you dial the number through your LTE device modem then through the network
sends the SIP message to the target device (on the dialed number) with a request to answer the call.
SIP account
SIP account is a type of VoIP account. This is an agreement with your ISP, based on which you can perform via
internet phone calls. Once LTE modem to store the information on your SIP account is then able to send all the
information about the phone call to your ISP.
SIP account is not strictly necessary. SIP devices (such as the LTE modem) can make a phone call without
the participation of the service provider SIP. Normally, however, this process is impractical and difficult. SIP
service provider shall provide all necessary steps to direct a call session that reports of both parties arrive at
the right place.
Detection of voice / silence
Detection algorithm Voice Voice Activity Detection (VAD) can recognize a human voice. This algorithm allows
reduction in load transfer capacity of the call, because no transmission " silent packets " at a time when you do not reduction in load transfer capacity of the call, because no transmission " silent packets " at a time when you do not reduction in load transfer capacity of the call, because no transmission " silent packets " at a time when you do not reduction in load transfer capacity of the call, because no transmission " silent packets " at a time when you do not reduction in load transfer capacity of the call, because no transmission " silent packets " at a time when you do not
speak.
Generating noise utvrzujícího
When using VAD algorithm LTE modem generates noise when affirming that the other party has just talking.
This affirming noise is proof that the call is still active, since silence could be considered a loss of connection.
echo cancellation
G.168 is an ITU-T standard, which eliminates echoes caused " reflection " your voice in a telephone receiver G.168 is an ITU-T standard, which eliminates echoes caused " reflection " your voice in a telephone receiver G.168 is an ITU-T standard, which eliminates echoes caused " reflection " your voice in a telephone receiver G.168 is an ITU-T standard, which eliminates echoes caused " reflection " your voice in a telephone receiver G.168 is an ITU-T standard, which eliminates echoes caused " reflection " your voice in a telephone receiver
during the call.
Where to learn more
For more information on SIP, see chapter 15.6 Technical details.
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