Nokia IP390 - Security Appliance, Installation Manual

Page: 45 / 97

Four-Port T1 Network Interface Card
IP390 Security Platform Installation Guide 45
Four-Port T1 Network Interface Card
All NICs installed in an IP390 are installed into slots on the appliance. T1 NICs can occupy any
of the slots or subslots in an appliance that other NICs do not occupy.
T1 NIC Features
This four-port T1 network interface card (NIC) with integrated CSU/DSU occupies a single
PMC slot in Nokia IP390 appliances. CSU/DSU, or Channel Service Unit/Data Service Unit, is
a digital-interface you use to connect your IP390 to a T1 circuit.
T1 circuits are commonly used for Enterprise branch office WAN connectivity deployments The
Nokia T1 NIC provides up to 1.5 Mbps of throughput and is deployed in the United States.
The following figure shows T1 NIC front panel details.
Figure 18 Four-port T1 NIC front-panel details
T1 Connectors and Cables
To connect the NIC to a T1 device, use a straight-through RJ-48 cable.
Note
Cable types C, S, and X will all work properly with your Nokia T1 NICs.
Note
If you use an RJ-45 cable with your T1 NIC by mistake, it will not work, but no damage to
your appliance or NIC will occur.
To connect the NIC to another CSU/DSU, use an RJ-48 crossover cable wired as shown in
Figure 20 on page 46.
Nokia recommends the use of shielded twisted pair cables and connectors for best
Electromagnetic Interference and Immunity performance.
Warning
To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord with
the T1/E1 cards.
00686
3 2 1 4
T1 PMC