Installing the VoIP IAD
38
SmartNode 4830 User Manual
3 • Hardware installation
use a tail-circuit cable. You can purchase a tail-circuit cable from a datacom-supply vendor. A tail-circuit cable
will cross-over the necessary V.35 signals so that the two DTE interfaces can communicate.
Note
Some third-party equipment will not be able to work properly in
DTE-to-DTE configurations even when using a tail-circuit cable.
Please refer to your third party equipment user manual for informa-
tion on DTE-to DTE operation.
The SN4830’s V.35 interface requires a cable with a male DB-25 connector. Attach the male DB-25/M35
connector of the V.35 cable to the female DB-25 connector on the SN4830. Attach the other end of the cable
to the V.35 connector on local V.35 modem or multiplexer device.
Installing the X.21 interface cable.
The SmartNode Model 4830 comes with an X.21 interface presented on
a DB-15 female connector (see
figure 17
).
Figure 17. Rear view of the SN4830 showing location of X.21 interface connector
X.21 serial port connector
