3Com DSA-3CV1100-02 service manual MTU/MDU Application

12OVERVIEW

Figure 1 MTU/MDU Application

Existing Phone

Lines

Punch-Down

Block

	Regular
	Phone
	Cable
	Corporate
	Intranet
Ethernet	VCN AP

Visitor Based

Networking Servers

Corporate

SuperStack II 1100 Switch

Server

Ethernet

Firewall

Ethernet

VCN Access
Concentrator	VPN Router
	T1 to ISP
Punch-Down	Internet
	VPN Router
Block

PBX

Phone Line

PSTN

The VCN AC is connected to the VCN APs, the analog PBX, and an Ethernet switch, e.g. a 3Com VCN Services Switch or a SuperStack II Switch 1100. A standard metallic pair telephone line connects each VCN AP to a VCN AC co-located with the analog PBX or local telephone exchange.

The Visitor and Community Network solution also works with the

SuperStack II Switch 3300.

When a personal computer equipped with an Ethernet card is plugged into the Ethernet port of the VCN AP, the Visitor and Community Network system provides fast internet and other network services for data transmissions, and allows voice channels to be used simultaneously.