Multitech MultiVOIP 800 MVP800 User's Guide download pdf (Page 8)

MultiVOIP 400/800 User Guide

Typical Application

Before Voice Over IP (VOIP), i.e., voice over the Internet, a corporate office had a data connection to

the Internet and a voice connection to the public switched telephone network (PSTN). With VOIP, the

two networks can be tied together. To accomplish this, a MultiVOIP is connected between the public

switched telephone network and the data network as shown in the typical VOIP application in Figure

1-2. A MultiVOIP 400/800 at the corporate office is tied into the public switched telephone network

thru the corporate PBX and to the data network. The corporate MultiVOIP is an MVP400/800 with

four voice/fax channels connected to the PBX allowing the sales, marketing and regional offices to

simultaneously call in or fax on any one of the corporate telephone numbers. The sales office is

using a MultiVOIP MVP 200 that is connected to the sales office Key Telephone System (KTS) in

which a sales attendent answers in-coming calls and directs them to their proper destination. The

marketing office and regional offices also use MVP200s. The marketing office is set up with the

MultiVOIP connected to the E&M trunks on the PBX. The regional office uses an FXS interface to

connect two anlaog telephones directly to the local telephone network.

In this configuration, the corporate MultiVOIP is connected to analog trunks on the corporate PBX

and the Ethernet connection is plugged into the hub on the data network. The data network is

connected via a router to the Internet. In our typical application, any user at the corporate office can

pick up a telephone and call the sales, marketing, or regional office. To accomplish this, the caller

picks up the phone and dials a trunk extension, for example extension 4. This is the same principle

as dialing 9 for an outside line in a corporate environment. A second dial tone is heard, the caller

then dials extension 201 at the sales office. This rings the KTS at the sales office. The sales

receptionist answers the call and then directs the call (for example, you wanted to talk to the person

at extension 5125) and a voice conservation takes place.

101

Sales Office

Internet/Intranet

IP Network

Corporate Office

HUB

PSTN Connection

(T1/E1, PRI, etc.)

Web Server

Workstation

MultiVOIP

IP Address

201.22.122.118

Mask 255.255.255.128

LAN

ISP

PSTN

HUB

Workstation

Analog Connections

Channel 1: E&M Channel 2: E&M

Channel 3: E&M Channel 4: E&M

Router (with Diffserv)

IP Address 201.22.122.1

Mask 255.255.255.128

MultiVOIP

IP Address 205.24.123.119

Mask 255.255.255.240

Router (with Diffserv)

IP Address 206.25.124.110

Mask 255.255.255.240

Router Static IP

Address 209.96.211.90

102

Optional

H.323 Gatekeeper

IP Address 201.22.122.110

Port Number 1719

LAN

#202

512-4120

512-4122

512-4123

512-4121

103

104

PSTN

HUB

Workstation

Router (with Diffserv)

IP Address 208.25.124.110

Mask 255.255.255.240

Router Static IP

Address 207.26.125.121

LAN

ISP

Workstation

Router (with Diffserv)

IP Address 210.33.4.110

Mask 255.255.255.240

Router Static IP

Address 209.96.211.90

LAN

#401

#402

ISP

KTS

Marketing Office

Regional Office

532-6128

532-6129

302

301

522-5125

522-5126

#201 (5127)

522-5128

FXS Interface

E&M Interface

FXS Interface

522-5124

Figure 1-2. Example of a MultiVOIP application

The sales office is set up with a two voice/fax channel MultiVOIP MVP200 connected to the LAN with

one voice/fax channel connected directly to the local Public Switch Telephone Network (PSTN) and

the second voice/fax channel connected to the trunk side of the KTS. This allows an attendent to

direct incoming calls to any one of the telephones or fax machines connected to the Key Telephone

System at the sales office. This allows the corporate caller to call either the sales office or instead of

dialing extension 201, dials extension 202 and is now connected to the local telephone network at the

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