Specifications
Table Of Contents
- AR Router Hardware Reference
- Copyright
- Contents
- Introduction
- Models Covered By This Reference
- Where To Find More Information
- Using Windows Terminal and Windows Hyperterminal
- Router Start-up
- Online Documentation
- AT-TFTP Server
- Memory
- AR300 Series Routers
- AR400 Series Routers
- AR700 Series Routers
- AT-RPS 740
- Mini Accelerator Cards (MACs)
- PCI Accelerator Cards (PACs)
- Flash Memory
- Interfaces
- Test Facility
- Cables And Loopback Plugs
- PICs and NSMs
- Restricted Procedures
- Contacting Us

88 AR Router
C613-03058-00 REV A
Figure50: Pin wiring diagram for a standard modem cable.
Figure51: Pin wiring diagram for a Macintosh serial cable.
Transceivers and AUI Cables
There are four types of Ethernet transceiver available (Table 37 on page 89). The
10BASE-5 thick Ethernet transceiver will be remote from the router, due to the
nature of the coaxial cable, and will therefore require an AUI cable. The other
types of transceiver may be connected using an AUI cable or, if the transceiver
is small and lightweight, it may be connected directly to the AUI port on the
back of the router. If this is done, care must be taken to avoid strain on the AUI
port connector.
DB25
Male
1
2
3
4
5
6
7
8
20
22
6
5
8
7
4
2
3
1
→
←
→
←
←
→
←
(TXD)
(RXD)
(RTS)
(CTS)
(GND)
(DCD)
(DTR)
(RING)
Not connected
Not connected
Notes:
(1) → Output from switch or router; ← Input to switch or router.
(2) Cable version 1.0.
MODEM
RJ45
(to switch or router)
RJ45
(to switch or router)
MiniDin
(to Macintosh)
1
2
3
4
5
6
7
8
←
→
←
→
←
→
(RING)
(DCD)
(RTS)
(RXD)
(GND)
(TXD)
(CTS)
(DTR)
Not connected
Notes:
(1) → Output from switch or router; ← Input to switch or router.
(2) Cable version 1.0.
MINIDIN
1
2
8
5
4
6
7
3