Справочник Пользователя для Tandberg Data Data Network Router MSE 8321

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Check with your network provider to ensure that your incoming ISDN PRI line is 
terminated in an NTU/CSU (Network Termination Unit/ Channel Service Unit). If 
it is not, then seek their advice regarding the provisioning of such a device. Do not 
connect the ISDN gateway directly to an external ISDN line.

If your network provider has not terminated all of your incoming ISDN PRI lines 
with an NTU/CSU, Codian recommends that you install a suitably approved CSU to 
protect the ISDN gateway from damage by surges on your ISDN PRI lines.

Connect an Ethernet cable from Ethernet Port A to an Ethernet switch (rather than a 
hub, to minimize interference from other devices on the network). The Ethernet 
port is a 10/100/1000 Mbps auto-sensing connection.

The ISDN gateway uses a standard RJ48C ISDN interface for each PRI port.Use a 
single straight-through STP patch cable to connect each PRI port on the ISDN 
gateway to your ISDN connection.
For information about the behavior of the ISDN port LEDs, refer to Table 1, ISDN 
gateway LED behavior, on page 2.

To reduce the risk of fire, use only 26 AWG or larger telecommunication 
line cord.

Only connect to Ethernet Port A. Ethernet Port B is reserved for future 
expansion; do not connect anything to Ethernet Port B.