ADTRAN T3SU 300 Network Card User Manual


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Chapter 7. Applications
61200217L1-1 T3SU 300 User Manual 7-5
FRACTIONAL T3 CARRIER APPLICATION
When network providers want to provide service at rates less than
full T3, T3SU 300 units can be used in pairs for deploying sub-T3
rate services.
In this application example (shown in Figure 7-3), a carrier provides
fractional T3 access at 8 Mbps for internet connectivity. The data
connection can be either V.35 or HSSI at either location. This
network uses a HSSI port at the carrier’s internet POP (point of
presence) and a high-speed V.35 connection at the customer’s
router. The carrier manages both the local and remote T3SU 300s
via SNMP. Table 7-3 gives an example configuration for this
application.
Figure 7-3. Fractional Application
While in DTE Loopback, data from the host is transmitted into the net-
work.
Router
HSSI
8 Mbps
V.35
8 Mbps
T3T3
Router
T3SU 300
Dedicated
Network
IN SERVICE
IN TEST
ALARM
LOS
IN SERVICE
IN TEST
ALARM
LOS
DTE PORT 1
DTE PORT 2
DTE PORT 3
DTE PORT 4
T3SU 300
NETWORK
CONTROL
IN SERVICE
IN TEST
ALARM
LOS
IN SERVICE
IN TEST
ALARM
LOS
IN SERVICE
IN TEST
ALARM
LOS
REMOTE
ACTIVE
T3SU 300
IN SERVICE
IN TEST
ALARM
LOS
IN SERVICE
IN TEST
ALARM
LOS
DTE PORT 1
DTE PORT 2
DTE PORT 3
DTE PORT 4
T3SU 300
NETWORK
CONTROL
IN SERVICE
IN TEST
ALARM
LOS
IN SERVICE
IN TEST
ALARM
LOS
IN SERVICE
IN TEST
ALARM
LOS
REMOTE
ACTIVE
Carrier
Internet
Access
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