LTE3311 Series User’s Guide
117
CHAPTER 17
Voice over IP
17.1 Overview
Use this chapter to:
• Connect an analog phone to the LTE3311.
• Make phone calls over the Internet, as well as the regular phone network.
• Configure settings such as speed dial.
• Configure network settings to optimize the voice quality of your phone calls.
17.1.1 What You Can Do in this Chapter
These screens allow you to configure your LTE3311 to make phone calls over the Internet and your
regular phone line, and to set up the phone you connect to the LTE3311.
•Use the General screen to enable VoIP, NAT traversal and dialing plan on the LTE3311 (Section
17.3 on page 118).
•Use the Phone Book screen to manage your contact names and phone numbers (Section 17.4
on page 119).
•Use the Speed Dial screen to set up shortcuts for dialing frequently-used (VoIP) phone numbers
(Section 17.5 on page 120).
•Use the Phone Conf. screen to configure call features (Section 17.6 on page 121).
•Use the SIP Conf. screen to set up information about your SIP account, and configure the SIP
server information (Section 17.7 on page 123).
17.1.2 What You Need to Know About VoIP
VoIP
VoIP stands for Voice over IP. IP is the Internet Protocol, which is the message-carrying standard
the Internet runs on. So, Voice over IP is the sending of voice signals (speech) over the Internet (or
another network that uses the Internet Protocol).
SIP
SIP stands for Session Initiation Protocol. SIP is a signalling standard that lets one network device
(like a computer or the LTE3311) send messages to another. In VoIP, these messages are about
phone calls over the network. For example, when you dial a number on your LTE3311, it sends a
SIP message over the network asking the other device (the number you dialed) to take part in the
call.
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