Technical data

ARN/DC Technical Specifications
116273-B Rev 00
C-5
Ethernet 10BASE-T Interface
The Ethernet 10BASE-T interface provides UTP support. Table C-3 identifies the
pin locations and function assignments for these interfaces.
Serial Interfaces
The ARN/DC supports up to five serial interfaces. You can connect up to three,
44-pin (DB-44) serial cables to an ARN/DC that contains an optional tri-serial or
Ethernet/tri-serial expansion module. You can connect one, 44-pin serial cable to
each serial adapter module (the ARN/DC can support two).
The serial interfaces provide multiprotocol WAN connection, each operating
independently with RS-232, RS-422, RS-530, V.35, V.28, and X.21 electrical
interfaces at transmission rates from 1200 b/s to 2.048 Mb/s. When used with
standard keyed cables, the ports automatically configure to the desired electrical
interface.
You can use the following cables, described in the Cable Guide:
• V.35 connections (Order No. 7220)
• V.28 connections (Order No. 7837)
• X.21 connection (Order No. 7224)
• RS-422 connections (Order No. 7318)
• RS-232 connections (Order No. 7826)
• RS-530 connections (Order No. AE0018012)
Table C-3. 10BASE-T Interface Pin Assignments
Pin Assignment Pin No. Signal (Function)
1 TD+ (Transmit to UTP wire)
2 TD- (Transmit to UTP wire)
3 RD+ (Receive from UTP wire)
4 Not used
5 Not used
6 RD- (Receive from UTP wire)
7 Not used
8 Not used
12345678