NCB-IM Programming
NCB-IM Routers
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IFI Routers/Repeaters Installation & Operation Manual - P/N: 53388:Rev: A1 5/5/09
Step 8. Slide the router and shelf into the cabinet.
Step 9. Plug the router’s power transformer into previously installed electrical outlet.
Telephone Line / Modem Connection Descriptions
The NCB-IM router's on-board modem can operate under PSTN (dial-up) or leased-line modes.
Each of these modes has different configuration and connection requirements.
Figure 4.9 NCB-IM Modem
PSTN
Dial-up connections use a 2-wire connection to a standard dial-up telephone circuit. A
standard telephone cord can be used. Each NCB-IM unit contains a label on the bottom with FCC
and Canadian registration numbers, ringer equivalence, and load number information. Refer to the
Router Configuration part of this section for configuration information.
Leased-Line
This connection style can use either a 2-wire or 4-wire connection to a dedicated
leased-line circuit. In 2-wire leased-line mode, the audio circuit must pass audio in both directions
simultaneously. Some leased-line audio circuits (most notably microwave RF channels) provide a
4-wire circuit made up of a transmit pair and a receive pair. Use the 4-wire settings in these
situations.
4.5 NCB-IM Programming
For the NCB-IM router, no modem programming is required for leased line or dry copper
installations; however, for dial-up operation, some configuration setup must done on the Echelon
Gateway. A programming utility is included in the Echelon Gateway that performs this function
after all physical connections and switch settings have been made.
ON 1 2 3 4 5 6 7 8
CMD CSVC RSVC OPTION A
AUDIO CD OH LINE
DC IN
NETWORK
NCB NETWORK COMBINER
ERR
PWR ACT
RESET
Modem Line LEDs
Modem
Line RJ-11
Connector
NOTE:
Telephone circuit technical parameters may vary among service providers in different parts of
the country
.
Therefore, when ordering 2-wire or 4-wire leased-line telephone circuits, be sure to
specify an “analog leased-line data circuit for 19.2 kbps modems.”
NOTE:
4-wire leased-line circuits must have line protection devices at both modems which are UL
listed for this purpose to UL Standard 1459
.
These devices must be mounted in their own enclosures
with all connections run in conduit.
