LTE CPE B2368 User's
Guide
15 VoIP
Issue 01
Copyright © Huawei Technologies Co., Ltd.
126
sample and predictions based on previous samples. The pattern is similar zvukovější prediction, the
less space is needed for its description. G.726 operates at transmission speeds of 16, 24, 32 or 40
Kbps.
•
G.729 coding is hybrid modulated waveform synthesis method of analysis that uses a filter made based on
information about how the human vocal cords produces sound. G.729 offers good sound quality and
transmission speed requires only 8 Kbps.
Message Waiting Indication MWI
After activating the message waiting indicator (MWI), your phone beeps alert to the presence of new
voice messages. VoIP provider must send message waiting indicator in support SIP packets, see RFC
3842nd
15.6.3 Quality of Service (QoS)
Quality of service, or QoS (from the English Quality of Service) describes how the network's ability to deliver data with minimum
delay and method that uses the network for the transmission of multimedia messages in real time.
Type of Service (ToS)
Network traffic can be classified by setting the type of service or ToS (in English Type of Service), the source data
stream (eg. LTE modem). The server will then be able to determine the best method of delivery of different types of
data packets.
15.6.4 Overview of additional telephone services
VoIP service provider generally offers a suite of complementary telephone services, including call hold, call
waiting and call forwarding. The LTE modem supports the following phone service:
•
call hold
•
call waiting
•
Establishing a second call
•
call Transfer
•
Three-way conference call
•
Do Not Disturb
NOTE
These services may be needed before applying by phone ports LTE modem to activate a VoIP service provider.
Flash button
deadline " flash " or tapping means holding very short (on the order of hundreds of milliseconds) the suspension
deadline " flash " or tapping means holding very short (on the order of hundreds of milliseconds) the suspension
deadline " flash " or tapping means holding very short (on the order of hundreds of milliseconds) the suspension
deadline " flash " or tapping means holding very short (on the order of hundreds of milliseconds) the suspension
deadline " flash " or tapping means holding very short (on the order of hundreds of milliseconds) the suspension
phone keys. Newer phones are equipped with dedicated flash button, which sends a signal electronically. If the
Flash key is not available, it is possible to simulate the function of a very short suspension by tapping the button on
the phone. However it is recommended to use a dedicated button, which is much more accurate timing. When
manually tapping may be too long to hold the key to the suspension assessed as call termination.
Double-click / flash is used to control additional telephone services.