Huawei B2268H Router Manual PDF (Setup & Configuration Guide)

Page 111 / 155 Scroll up to view Page 106 - 110

LTE TDD B2268H

User Guide

13 VoIP

Issue 01 (2014-01-15)

104

Each field is described in the following table.

Table 13-4

VoIP > Phone > Region

LABEL

DESCRIPTION

Region

Settings

Select the place in which the LTE Device is located.

Call Service

Mode

Select the mode for supplementary phone services (call hold, call waiting,

call transfer and three-way conference calls) that your VoIP service

provider supports.



Europe Type

- use supplementary phone services in European mode.



USA Type

- use supplementary phone services American mode.

You might have to subscribe to these services to use them. Contact your

VoIP service provider.

Apply

Click this to save your changes and to apply them to the LTE Device.

Cancel

Click this to set every field in this screen to its last-saved value.

13.5 The Call Rule Screen

Use this screen to add, edit, or remove speed-dial numbers for outgoing calls. Speed dial

provides shortcuts for dialing frequently-used (VoIP) phone numbers. You also have to create

speed-dial entries if you want to call SIP numbers that contain letters. Once you have

configured a speed dial rule, you can use a shortcut (the speed dial number, #01 for example) on

your phone's keypad to call the phone number.

To access this screen, click

VoIP > Call Rule

.

Figure 13-5

VoIP > Call Rule

Each field is described in the following table.

Page 112 / 155

LTE TDD B2268H

User Guide

13 VoIP

Issue 01 (2014-01-15)

105

Table 13-5

VoIP > Call Rule

LABEL

DESCRIPTION

Speed Dial

Use this section to create or edit speed-dial entries.

#

Select the speed-dial number you want to use for this phone number.

Number

Enter the SIP number you want the LTE Device to call when you dial the

speed-dial number.

Description

Enter a short description to identify the party you call when you dial the

speed- dial number. You can use up to 127 printable ASCII characters.

Add

Click this to use the information in the

Speed Dial

section to update the

Speed

Dial Phone Book section.

Phone Book

Use this section to look at all the speed-dial entries and to erase them.

#

This field displays the speed-dial number you should dial to use this entry.

Number

This field displays the SIP number the LTE Device calls when you dial the

speed-dial number.

Description

This field displays a short description of the party you call when you dial the

speed-dial number.

Modify

Use this field to edit or erase the speed-dial entry.

Click the

Edit

icon to copy the information for this speed-dial entry into the

Speed Dial

section, where you can change it. Click

Add

when you finish

editing to change the configurations.

Click the

Delete

icon to erase this speed-dial entry.

Clear

Click this to erase all the speed-dial entries.

Cancel

Click this to set every field in this screen to its last-saved value.

13.6 Technical Reference

This section contains background material relevant to the

VoIP

screens.

13.6.1 VoIP

VoIP is the sending of voice signals over Internet Protocol. This allows you to make phone calls

and send faxes over the Internet at a fraction of the cost of using the traditional circuit- switched

telephone network. You can also use servers to run telephone service applications like PBX

services and voice mail. Internet Telephony Service Provider (ITSP) companies provide VoIP

service.

Circuit-switched telephone networks require 64 kilobits per second (Kbps) in each direction to

handle a telephone call. VoIP can use advanced voice coding techniques with compression to

reduce the required bandwidth.

Page 113 / 155

LTE TDD B2268H

User Guide

13 VoIP

Issue 01 (2014-01-15)

106

13.6.2 SIP

The Session Initiation Protocol (SIP) is an application-layer control (signaling) protocol that

handles the setting up, altering and tearing down of voice and multimedia sessions over the

Internet.

SIP signaling is separate from the media for which it handles sessions. The media that is

exchanged during the session can use a different path from that of the signaling. SIP handles

telephone calls and can interface with traditional circuit-switched telephone networks.

SIP Identities

A SIP account uses an identity (sometimes referred to as a SIP address). A complete SIP identity

is called a SIP URI (Uniform Resource Identifier). A SIP account's URI identifies the SIP

account in a way similar to the way an e-mail address identifies an e-mail account. The format

of a SIP identity

is SIP-Number@SIP-Service-Domain.

SIP Number

The SIP number is the part of the SIP URI that comes before the "@" symbol. A SIP number can

use letters like in an e-mail address

([email protected]

for example) or numbers like a

telephone number

([email protected]

for example).

SIP Service Domain

The SIP service domain of the VoIP service provider is the domain name in a SIP URI. For

example, if the SIP address is

[email protected]

m

, then "VoIP-provider.com" is

the SIP service domain.

SIP Registration

Each LTE Device is an individual SIP User Agent (UA). To provide voice service, it has a

public IP address for SIP and RTP protocols to communicate with other servers.

A SIP user agent has to register with the SIP registrar and must provide information about the

users it represents, as well as its current IP address (for the routing of incoming SIP requests).

After successful registration, the SIP server knows that the users (identified by their dedicated

SIP URIs) are represented by the UA, and knows the IP address to which the SIP requests and

responses should be sent.

Registration is initiated by the User Agent Client (UAC) running in the VoIP gateway (the LTE

Device). The gateway must be configured with information letting it know where to send the

REGISTER message, as well as the relevant user and authorization data.

A SIP registration has a limited lifespan. The User Agent Client must renew its registration

within this lifespan. If it does not do so, the registration data will be deleted from the SIP

registrar's database and the connection broken.

The LTE Device attempts to register all enabled subscriber ports when it is switched on. When

you enable a subscriber port that was previously disabled, the LTE Device attempts to register

the port immediately.

Page 114 / 155

LTE TDD B2268H

User Guide

13 VoIP

Issue 01 (2014-01-15)

107

Authorization Requirements

SIP registrations (and subsequent SIP requests) require a username and password for

authorization. These credentials are validated via a challenge / response system using the HTTP

digest mechanism (as detailed in RFC3261, "SIP: Session Initiation Protocol").

SIP Servers

SIP is a client-server protocol. A SIP client is an application program or device that sends SIP

requests. A SIP server responds to the SIP requests.

When you use SIP to make a VoIP call, it originates at a client and terminates at a server. A SIP

client could be a computer or a SIP phone. One device can act as both a SIP client and a SIP

server.

SIP User Agent

A SIP user agent can make and receive VoIP telephone calls. This means that SIP can be used

for peer-to-peer communications even though it is a client-server protocol. In the following

figure, either

A

or

B

can act as a SIP user agent client to initiate a call.

A

and

B

can also both act

as a SIP user agent to receive the call.

Figure 13-6

SIP User Agent

SIP Proxy Server

A SIP proxy server receives requests from clients and forwards them to another server.

In the following example, you want to use client device

A

to call someone who is using client

device

C

.

Step 1

The client device (

A

in the figure) sends a call invitation to the SIP proxy server

B

.

Step 2

The SIP proxy server forwards the call invitation to

C

.

Page 115 / 155

LTE TDD B2268H

User Guide

13 VoIP

Issue 01 (2014-01-15)

108

Figure 13-7

SIP Proxy Server

----End

SIP Redirect Server

A SIP redirect server accepts SIP requests, translates the destination address to an IP address

and sends the translated IP address back to the device that sent the request. Then the client

device that originally sent the request can send requests to the IP address that it received back

from the redirect server. Redirect servers do not initiate SIP requests.

In the following example, you want to use client device

A

to call someone who is using client

device

C

.

Step 1

Client device

A

sends a call invitation for

C

to the SIP redirect server

B

.

Step 2

The SIP redirect server sends the invitation back to

A

with

C

's IP address (or domain name).

Step 3

Client device

A

then sends the call invitation to client device

C

.

Rate

Popular Huawei Models

Famous Router IPs

Famous Router Companies

Bookmark Our Site

Share