Nc (Network Control) Port Pinouts; Cabling; Cable Considerations - Motorola 326X V.34 User Manual

NC (Network Control) Port Pinouts

Table B-3 describes the pinouts for the IN and OUT NC (Network Control) ports.
Table B-3.
Network Control Port Connector Pinouts

Cabling

This section provides important information about cabling and operating the modem
at DTE rates greater than 19.2 kbps.
NOTE: 326XFAST and 326XFAST-SDC Series Modems are referred to as 326X
Series Modems here.

Cable Considerations

Motorola has specified a maximum allowable cable capacitance for use with the
expanded data rates of 326X modems. You must determine the correct capacitance
of the cable you intend to use with the modem.
Pin In
1 Not Connected
2 TXD In
3 RXD In
4 RTS In
5 Not Connected
6 Not Connected
7 Ground
8 DCD In
"In" signals use a DCE-type interface. This type of interface connects directly to the
DTE-type interface provided by Motorola Network Management Systems.
"Out" signals use a DTE-type interface. This type of interface may connect to a Motorola
network-managed product.
Caution
When operating the modem at DTE rates higher than 19.2
kbps, carefully follow the information here to determine the
cables to use with your application. For the modem to operate
as specified, Motorola has indicated the maximum capacitance
of cables to be used when operating at data rates higher than
19.2 kbps. If this method is not followed, your modem may
cause errors in data transmission. Motorola makes no guaran-
tee of proper modem operation if you do not use a cable with
the correct capacitance.
Out
User Special In
TXD Out
RXD Out
RTS Out
Not Connected
User Special Out
Ground
DCD Out
Cabling and Interface Pinouts B-7