NEC ND-70919 Uživatelský manuál stáhnout pdf (Strana 17)

NEAX2000 IVS

ISDN System Manual

Page 6 ND-70919 (E), Issue 1.0

CHAPTER 1 GENERAL INFORMATION

System Outline

System Outline of ISDN-VPN

The Virtual Private Network (VPN) is a service which provides an interoffice private line via an

ISDN network.

When you dial a station number (Called Party Subaddress), the system sends a pre-assigned

office number of a called party together with the Called Party Subaddress to an ISDN network.

With this function, an interoffice call can be made by only dialing a station number (Called Party

Subaddress).

Figure 1-3 shows an example of using the VPN.

Figure 1-3 Example of ISDN-VPN (1 of 2)

• When an opposite office can interface with the ISDN network

PBX

(034567-8910)

PBX

Calling Party

Dial 1234

Called Party

ISDN

0345678910 (Office No.)

1234 (Called Party Subaddress)

Station No. 1234

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NEC ND-70919 Uživatelský manuál Strana 17