Adtran Total Access 1240 Bedienungsanleitung Seite 17

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61179605L5-5B 2-1
Section 2
Application Guidelines
INTRODUCTION
The Total Access 1240 operates as a transparent bridge to provide Medium Access Control
(MAC) level bridging for Ethernet-like networks. The number of attached devices can be up to
twenty-four 2-wire SHDSL modems or twelve 4-wire SHDSL modems or some combination
thereof. When operating in the 4-wire SHDSL mode, if 2 wires are unavailable then the entire
4-wire circuit becomes Out of Service.
As shown in Figure 2-1, service providers are positioned to deploy voice, data, and video over
the same connection (triple play type services) using devices such as the Total Access 1240
SHDSL DSLAM.
Figure 2-1. Total Access 1240 Application
Voice
Gateway
PSTN
SHDSL
Modem
PVCs
Management
Server
O&M VLAN
Data VLAN
Video VLAN
Voice VLAN
Ethernet
Switch
Total Access
1240
Set-top
Box
Router
ISP
Video
SP
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