DrayTek Vigor-2930 Router Manual PDF (Setup & Configuration Guide)

Page 171 / 298 Scroll up to view Page 166 - 170

igor2930 Series User’s Guide

163

3.10.3 Certificate Backup

Local certificate and Trusted CA certificate for this router can be saved within one file.

Please click

Backup

on the following screen to save them. If you want to set encryption

password for these certificates, please type characters in both fields of

Encrypt password

and

Retype password

.

Also, you can use

Restore

to retrieve these two settings to the router whenever you want.

3.11 VoIP

Voice over IP network (VoIP) enables you to use your broadband Internet connection to

make toll quality voice calls over the Internet.

There are many different call signaling protocols, methods by which VoIP devices can talk

to each other. The most popular protocols are SIP, MGCP, Megaco and H.323. These

protocols are not all compatible with each other (except via a soft-switch server).

The Vigor V models support the SIP protocol as this is an ideal and convenient deployment

for the ITSP (Internet Telephony Service Provider) and softphone and is widely supported.

SIP is an end-to-end, signaling protocol that establishes user presence and mobility in VoIP

structure. Every one who wants to talk using his/her SIP Uniform Resource Identifier, “SIP

Address”. The standard format of SIP URI is

sip: user:password @ host: port

Some fields may be optional in different use. In general, "host” refers to a domain. The

“userinfo” includes the user field, the password field and the @ sign following them. This is

very similar to a URL so some may call it “SIP URL”. SIP supports peer-to-peer direct

calling and also calling via a SIP proxy server (a role similar to the gatekeeper in H.323

networks), while the MGCP protocol uses client-server architecture, the calling scenario

being very similar to the current PSTN/ISDN network.

After a call is setup, the voice streams transmit via RTP (Real-Time Transport Protocol).

Different codecs (methods to compress and encode the voice) can be embedded into RTP

packets. Vigor V models provide various codecs, including G.711 A/μ-law, G.723, G.726

and G.729 A & B. Each codec uses a different bandwidth and hence provides different levels

of voice quality. The more bandwidth a codec uses the better the voice quality, however the

codec used must be appropriate for your Internet bandwidth.

Usually there will be two types of calling scenario, as illustrated below:

z

Calling via SIP Servers

First, the Vigor V models of yours will have to register to a SIP Registrar by sending

Page 172 / 298

Vigor2930 Series User’s Guide

164

registration messages to validate. Then, both parties’ SIP proxies will forward the

sequence of messages to caller to establish the session.

If you both register to the same SIP Registrar, then it will be illustrated as below:

The major benefit of this mode is that you don’t have to memorize your friend’s IP

address, which might change very frequently if it’s dynamic. Instead of that, you will

only have to using

dial plan

or directly dial your friend’s

account name

if you are

with the same SIP Registrar. Please refer to the

section 4.5.1.

z

Peer-to-Peer

Before calling, you have to know your friend’s IP Address. The Vigor VoIP Routers

will build connection between each other. Please refer to the

section 4.5.2.

Our Vigor V models firstly apply efficient codecs designed to make the best use of

available bandwidth, but Vigor V models also equip with automatic QoS assurance.

QoS Assurance assists to assign high priority to voice traffic via Internet. You will

always have the required inbound and outbound bandwidth that is prioritized

exclusively for Voice traffic over Internet but you just get your data a little slower and

it is tolerable for data traffic.

3.11.1 DialPlan

This page allows you to set phone book and digit map for the VoIP function. Click the

Phone Book

and

Digit Map

links on the page to access into next pages for dialplan settings.

Page 173 / 298

igor2930 Series User’s Guide

165

Phone Book

In this section, you can set your VoIP contacts in the “phonebook”. It can help you to make

calls quickly and easily by using “speed-dial”

Phone Number

. There are total 60 index

entries in the phonebook for you to store all your friends and family members’ SIP addresses.

Loop through

and

Backup Phone Number

will be displayed if you are using Vigor 2930V

for setting the phone book.

Click any index number to display the dial plan setup page.

Enable

Click this to enable this entry.

Phone Number

The speed-dial number of this index. This can be any number

you choose, using digits

0-9

and

*

.

Page 174 / 298

Vigor2930 Series User’s Guide

166

Display Name

The Caller-ID that you want to be displayed on your friend’s

screen. This let your friend can easily know who’s calling

without memorizing lots of SIP URL Address.

SIP URL

Enter your friend’s SIP Address

This page will differ for different models. Below is a sample page obtained from Vigor

2930VSn. The selection of

Loop through

and

Backup Phone Number

is only available for

2930VSn model.

Enable

Click this to enable this entry.

Phone Number

The speed-dial number of this index. This can be any number

you choose, using digits

0-9

and

*

.

Display Name

The Caller-ID that you want to be displayed on your friend’s

screen. This let your friend can easily know who’s calling

without memorizing lots of SIP URL Address.

SIP URL

Enter your friend’s SIP Address

Loop through

For the model of Vigor 2930VSn, the selection should be as

the following:

Backup Phone Number

When the VoIP phone is obstructs or the Internet breaks down

for some reasons, the backup phone will be dialed out to

replace the VoIP phone number. At this time, the phone call

will be changed from VoIP phone into PSTN call according to

the loop through direction chosen. Note that, during the phone

switch, the blare of phone will appear for a short time. And

when the VoIP phone is switched into the PSTN phone, the

telecom co. might charge you for the connection fee. Please

type in backup phone number (PSTN number) for this VoIP

phone setting.

Digit Map

For the convenience of user, this page allows users to edit prefix number for the SIP account

with adding number, stripping number or replacing number. It is used to help user having a

quick and easy way to dial out through VoIP interface.

Page 175 / 298

igor2930 Series User’s Guide

167

Enable

Check this box to invoke this setting.

Prefix Number

The phone number set here is used to add, strip, or replace the

OP number.

Mode

None

- No action.

Add

- When you choose this mode, the OP number will be

added with the prefix number for calling out through the

specific VoIP interface.

Strip

- When you choose this mode, the OP number will be

deleted by the prefix number for calling out through the

specific VoIP interface. Take the above picture (Prefix Table

Setup web page) as an example, the OP number of

886

will be

deleted completely for the prefix number is set with

886

.

Replace

- When you choose this mode, the OP number will be

replaced by the prefix number for calling out through the

specific VoIP interface. Take the above picture (Prefix Table

Setup web page) as an example, the prefix number of 03 will

be replaced by 8863. For example: dial number of

“031111111” will be changed to “88631111111” and sent to

Rate

Popular DrayTek Models

Famous Router IPs

Famous Router Companies

Bookmark Our Site

Share