Connecting The Isdn Gw Mse 8321; Your Isdn Connection; Step One: Connect To Ethernet Port A; Step Two: Connect To The Isdn Ports - Cisco TelePresence ISDN GW MSE 8321 Getting Started Manual

Connecting the

Your ISDN connection

To reduce the risk of fire, use only 26 AWG or larger telecommunication
line cord.
Outside North America
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 GW MSE 8321 directly to an external ISDN line.
Within North America
If your network provider has not terminated all of your incoming ISDN PRI lines
with an NTU/CSU, Cisco recommends that you install a suitably approved CSU to
protect the ISDN GW MSE 8321 from damage by surges on your ISDN PRI lines.

Step one: Connect to Ethernet Port A

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.
Only connect to Ethernet Port A, as all initial configuration must be done
i
on this port. Do not connect anything to Ethernet Port B.

Step two: Connect to the ISDN ports

The ISDN GW MSE 8321 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
GW MSE 8321 to your ISDN connection.
For information about the behavior of the ISDN port LEDs, see Table 1, ISDN GW
MSE 8321 LED behavior, on page 4.
For D-channel signaling to be established, the ISDN GW MSE 8321 must
i
have found and synchronized with the ISDN network clock. In some
installations, you may have to explicitly request your ISDN provider to
enable the network clock before the link will be established.
ISDN GW MSE 8321

Connecting the ISDN GW MSE 8321

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