Sparklan WVTR-141 Manual de usuario

Wireless ATA

User Manual

Version 1.0

Model Name: WVTR-141

Brand Name: SparkLAN

No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any

form or by any means, whether electronic, mechanical, photocopying, recording, or otherwise

without the prior writing of the publisher.

Federal Communication Commission Interference Statement

This equipment has been tested and found to comply with the limits for a Class B digital device,

pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection

against harmful interference in a residential installation. This equipment generates, uses and can

radiate radio frequency energy and, if not installed and used in accordance with the instructions,

may cause harmful interference to radio communications. However, there is no guarantee that

interference will not occur in a particular installation. If this equipment does cause harmful

interference to radio or television reception, which can be determined by turning the equipment off

and on, the user is encouraged to try to correct the interference by one of the following measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to which the receiver is

connected.

- Consult the dealer or an experienced radio/TV technician for help.

FCC Caution: Any changes or modifications not expressly approved by the party responsible for

compliance could void the user's authority to operate this equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two

conditions: (1) This device may not cause harmful interference, and (2) this device must accept any

interference received, including interference that may cause undesired operation.

IMPORTANT NOTE:

FCC Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled

environment. This equipment should be installed and operated with minimum distance 20cm

between the radiator & your body.

This transmitter must not be co-located or operating in conjunction with any other antenna or

transmitter.

The availability of some specific channels and/or operational frequency bands are country

dependent and are firmware programmed at the factory to match the intended destination. The

firmware setting is not accessible by the end user.

Table of Contents

PART I INTRODUCTIONS................................................................1

Ch. 1 Introduction to VoIP............................................................................................................2

1.1 Advantages of VoIP to Businesses...................................................................................2

1.2 SIP – Most Popular VoIP Protocol.....................................................................................3

1.2.1 SIP Identities..................................................................................................................................3

1.2.2 Servers in SIP World......................................................................................................................3

1.3 VoIP-Friendly Networking Concepts .................................................................................4

1.3.1 NAT, Network Address Translation..........................................................................................................4

1.3.2 STUN, Simple Traversal of UDP through NAT.............................................................................5

1.3.3 Voice Codec...................................................................................................................................5

Ch. 2 Introduction to Network application....................................................................................6

2.1 Operation Modes................................................................................................................6

2.2 Wireless Modes..................................................................................................................6

2.3 Topologies of Network Application....................................................................................7

Ch. 3 Knowing WIFI-ATA.............................................................................................................9

3.1 Overview of WIFI-ATA........................................................................................................9

3.2 Key Features of WIFI-ATA...............................................................................................10

3.3 Outlook of WIFI-ATA........................................................................................................11

3.4 Web Configuration Environment......................................................................................13

PART II ATA SETTINGS.................................................................14

Ch. 4 Configuring WIFI-ATA......................................................................................................15

4.1 Quickly Setup (Setup Wizard)..........................................................................................16

4.2 Operation Mode................................................................................................................21

4.3 TCP/IP Settings................................................................................................................22

4.4 VoIP Settings....................................................................................................................27

4.5 Wireless settings...............................................................................................................34

4.6 Firewall settings................................................................................................................42

4.7 Management.....................................................................................................................45

PART III ILLUSTRATIONS.................................................................................. 49

Ch. 5 FAQ & Troubleshooting........................................................................................................50

5.1 How can I make a phone call?.........................................................................................50

5.2 How can I pick up the call waiting while I’m on the phone?...........................................50

5.3 How can I make a 3-way conference call? .....................................................................51

5.4 How can I transfer a call to others?.................................................................................51

5.5 Why can’t I login to the WIFI-ATA?..................................................................................51

5.6 Why can’t I access the Internet?......................................................................................51

5.7 Why can’t I make VoIP phone calls to others?...............................................................52

5.8 WIFI-ATA doesn’t respond correctly to key press sometimes.......................................52

Part I Introductions

Topics in Part I:

zCh. 1 Introduction to VoIP

zCh. 2 Introduction to Network application

zCh. 3 Knowing WIFI-ATA

Ch.1 IntroductiontoVoIP

VoIP stands for Voice over Internet Protocol, which means transmitting voice over the

most widely accepted network protocol around the world. Internet Protocol networking

is widely supported by almost all kinds of networks. VoIP, however, can also be

implemented inside LAN only without Internet involved if proper LAN environment is

ready. In addition, with improvements, business class VoIP system can integrate data,

voice, and video in the same network. This takes simplified management rules into

three different systems / networks and results in enhanced performance for all kinds of

organizations.

Later on, this chapter will guide you through the basic elements of the VoIP and some

related terms involved as below:

zAdvantages of VoIP to Businesses

zSIP – Most Popular VoIP Protocol

zVoIP-Friendly Networking Concepts

1.1 Advantages of VoIP to Businesses

Telephony system was invented around 100 years ago by Alexander Graham Bell.

Though telephones expedite the business communications, it’s expensive especially

for international phone calls. Internet Protocol has become the world wide standard.

With remarkable improvements in broadband access, VoIP technology and IP

Telephony, it is about time to provide businesses high quality IP phone calls at

comparably low cost with good reliability. Since voice is transmitted over the Internet

there is no demarcation of any physical boundary, this dissolves any need of being

charged at very high rate for making international phone calls.

IP Telephony focuses on using your existing telephony resources to build a vibrant

communications network that enhances productivity. A common business class VoIP

system provides all the features you’ve been familiar with—voicemail, call waiting, call

forwarding, to name a few—as well as many new exciting features such as making

LOCAL calls at whatever location you may be in the world.

Business world needs reliability and productivity as well. In conventional way,

telephony system and computer-based system are two different networks. Hence, the

two different networks require normally two times of man-power to manage, and they

are hardly managed under a set of unified managing principles. Business class VoIP

system will be able to provide easy-to-manage, business-driven architecture at a cost

that is competitive with your current expenditures.

1.2 SIP – Most Popular VoIP Protocol

SIP stands for Session Initiation Protocol which an application-layer is signaling

protocol that handles the VoIP phone calls over the Internet. Unlike other VoIP

protocols, SIP handles signaling only, and leverages other SIP-related protocols to

co-work with media sessions accordingly. The simple and flexible enough architecture

brings great chances to SIP for expanding, such as Video phone calls.

Later on, we’ll introduce some terminologies that are common in the VoIP worlds,

especially SIP related. In addition, we strongly recommend the system administrator to

read other VoIP related documents, textbooks to have better understanding in order to

construct a VoIP-friendly network.

1.2.1 SIP Identities

A SIP identity (a.k.a. SIP address or SIP Account) is similar to an email address which

is used for identifying who’s who in the SIP world just like email address used for

identifying the owner. The format of a SIP identity is like an email address, presented

as SIP-Number@SIP-Service-Domain. As the expression shows, there are two major

parts in the SIP account; the SIP-Number and SIP-Service-Domain.

zThe SIP number is the first part of the SIP URI that is located in front of the “@”

symbol. A SIP number can be alphabet characters just like in an e-mail address

([email protected] for example) or numeric digits like a regular telephone

number ([email protected] for example).

zThe SIP-Service-Domain is the domain name in a SIP URI. It is used to identify who

the service provider is. Normally, it will be the ITSP or the Internet domain name

which your company has.

1.2.2 Servers in SIP World

The architecture of SIP protocol is client-server based. Every SIP device or application

program will act as SIP client and SIP server as well. The SIP device acts as client

when sending out SIP requests, and acts as SIP server once responding to the SIP

requests.

The Servers we talk about here aim only at the device, and / or application program

which are used to provide VoIP services or application program which is used by

SIP-Service-Domain owner to provide its services to its subscribers. Sometimes, the

SIP Registration Server will be used for distinguishing purpose.

There are three kinds of the server:

zSIP Proxy Server; it relays call signaling, i.e. acts as both client and server

operating in a transactional manner, i.e., it keeps no session state

zSIP Redirect Server; it redirects caller to other servers

zSIP Registrar; it accepts registration requests from users and maintains user’s

whereabouts at a Location Server.

1.3 VoIP-Friendly Networking Concepts

There are many common features from regular router which will block your VoIP

communications, or make your network environment very VoIP-unfriendly. Here are

some topics which you need to take care of, or might be helpful in making a

VoIP-friendly network.

1.3.1 NAT, Network Address Translation

One of the most common features which router provides in order to provide Internet

access to all the computers in your LAN environment is “NAT”. In the simplest case,

NAT changes the source IP address of a packet received from a device to another IP

address before forwarding the packet towards its destination. When the response

comes back, NAT translates the destination address back to the device's IP address

and forwards it to the device.

NAT routers are commonly used to translate private (or internal) IP addresses in

packet headers to public (or external) IP addresses and vice versa. A NAT router

maps a private IP address & port; pairs it to a public IP address & port and whenever

the NAT router receives a packet with that public IP address & port, it knows how to

reroute the packet back to the private IP address & port.

The WIFI-ATA must know the public IP address which you get from your ISP in order

to provide its services. If there is a NAT router between the WIFI-ATA and your

broadband modem then your WIFI-ATA probably has a private IP address. In this case,

the SIP session will not be able to establish properly, and you must configure the NAT

router to forward traffic with the correct IP address & SIP port number to solve this

problem.

1.3.2 STUN, Simple Traversal of UDP through NAT

STUN can be used to help your, WIFI-ATA, to find the present types of NAT routers

and/or firewalls between it and the public Internet. STUN also allows the WIFI-ATA to

find the public IP address that NAT has assigned, so that the WIFI-ATA can embed it

in the SIP data stream. However, STUN does not work with symmetric NAT routers or

firewalls. For more information, please refer to RFC 3489 on STUN.

1.3.3 Voice Codec

A codec (coder/decoder) converts analog voice signals into digital signals and

decodes the digital signals back into voice signals. Each codec has its positive part,

good voice quality and bad part, bandwidth consumption. WIFI-ATA supports the

following codecs.

zITU-T G.711：G.711 is a Pulse Code Modulation (PCM) waveform codec. G.711

provides very good voice quality but requires 64 K bit/s of bandwidth.

zITU-T G.729：G.729 is an Analysis-by-Synthesis (ABS) hybrid waveform codec

that uses a filter based information about how the human vocal tract produces

sounds. G.729 provides good voice quality and reduces the required bandwidth to

8 K bit/s.

Ch.2 IntroductiontoNetworkapplication

The WIFI-ATA is an 802.11b/g compatible wireless network device. It can act as the

following roles：.

zBridge

zGateway

zWISP

zAccess Point

zAP Client

2.1 Operation Modes

The device provides 3 different operation modes. The operation mode is about the

communication mechanism between the wired Ethernet NIC and wireless NIC, the

following is the types of operation mode.

zGateway mode ：The wired Ethernet (WAN) port is used to connect with

ADSL/Cable modem and the wireless NIC is used for your private WLAN. The NAT

is existed between the 2 NIC and all the wireless clients share the same public IP

address through the WAN port to ISP. You can access the web server of device

through wireless, the default LAN IP address “192.168.1.254” and modify the setting

base on your ISP requirement.

zBridge mode：The wired Ethernet and wireless NIC are bridged together. Once the

mode is selected, all the WAN related functions will be disabled.

zWISP (Wireless ISP) mode：This mode can let you access the AP of your wireless

ISP and share the same public IP address from your ISP to the PCs connecting with

the wired Ethernet port of the device. To use this mode, first you must set the

wireless radio to be client mode and connect to the AP of your ISP then you can

configure the WAN IP configuration to meet your ISP requirement.

2.2 Wireless Modes

The wireless radio of the device acts as the following roles.

zAP (Access Point)：The wireless radio of device serves as communications “HUB”

for wireless clients and provides a connection to a wired LAN.

zAP Client：This mode provides the capability to connect with the other AP using

infrastructure/Ad-hoc networking types. With bridge operation mode, you can directly

connect the wired Ethernet port to your PC and the device becomes a wireless

adapter. And with WISP operation mode, you can connect the wired Ethernet port to

a hub/switch and all the PCs connecting with hub/switch can share the same public

IP address from your ISP.

The following table shows the supporting combination of operation and wireless radio

modes.

Bridge Gateway WISP

AP V V X

AP Client V V V

2.3 Topologies of Network Application

Hereafter are some topologies of network application for your reference.

Gateway mode topology：

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