ADTRAN T3SU 300, User Manual

Page: 112 / 145

Chapter 7. Applications
112 T3SU 300 User Manual 61202217L1-1B
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 on page 113), 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 on page 113 gives an
example configuration for this application.
DTE 4 (V.35) Port State - Enabled Port State - Enabled
Nx75k blocks - 20 Nx75k blocks - 20
System
Management Local IP Address - 10.4.10.2 Nothing required. Remote unit can
be managed using the local
T3SU 300.
Subnet Mask - 255.255.255.0
Gateway IP Address - 10.4.10.1
IP Security - Disabled
Trap IP Address - 10.4.10.10
Management Port - LAN
Table 7-2. Multiport Application Configuration Example (Continued)
Local T3SU 300 Remote T3SU 300
While in DTE Loopback, data from the host is transmitted into the
network.