Structured Ds1 - 3Com SuperStack II PathBuilder S330 Reference Manual

Structured DS1

A
DS0 = 5 DS0 DS1
Channel
Bank
A Channel bank converts analog to T1; putting channel on DS0 5.
PathBuilder S330/S310 puts DS0 5 on virtual circuit (VP0/VC35) and passes structured CBR traffic through
B
to the ATM network.
ATM network continues to carry CBR traffic on to another ATM network or drops the traffic (on DS0 5) to a
C
public switched telephone network.
Implement the structured service if you require DS0 midspan drop-and-insert. (See
Figure 186.)
Figure 186 CBR Structured DS1 - Drop and Insert
PathBuilder S330/S310
Midspan drop and insert allows services such as public switched telephone service
to be inserted into the ATM link. Combining this service with Ethernet bridge
service will provide you with a complete integrated communications access
solution, as shown in Figure 187.
Figure 187 Integrated PathBuilder S330/S310 Application
PBX or Key
System
DS0 = 1-6
Voice
Ethernet
LAN
DS0 = 5 VP0/VC35
Structured CBR traffic
Public Switched
Telephone
Network
Drop
DS0 = 6
ATM Network
LAN
Data
CBR Module 259
B C
ATM Network
DS0 = 5
Public Switched
Telephone
Network
PBX or Key
System
Ethernet
LAN