Network Router User Manual
Table Of Contents
- IOLINK-520 and IOLINK-PRO USER AND SYSTEM ADMINISTRATION GUIDE
- Installation
- Typical Applications & How to Configure Them
- 2.1 - Bridging and Routing
- Should You Bridge or Route?
- 2.2 Basic WAN Configurations
- 2.3 - Configure Remote Site Profiles
- 2.4 Advanced Features
- Introductionto Filtering
- Appendix AMenu Trees
- Appendix BOctet Locations on Ethernet Frames
- Appendix CServicing Information
- Opening the case
- Identifying the Internal Components
- To Clear a “Lost” Password
- Changing LAN or WAN Interfaces
- Selecting MDI or MDI-X LAN Interface
- Installing the ISDN Link Modules
- Processor settings for the ISDN Link Modules
- Changing the Termination Straps on the ISDN S/T Interface
- Connecting to the ISDN-U Link Module
- Performing a Software Upgrade
- Appendix DInterface Pinouts
- Pinout Information
- Link Clocking Information
- ATL-CSU/DSU Link Module Information
- Console Pinouts
- V.24 & RS232C Link Pinouts
- V.11/X.21 Link Pinouts
- RS442 & RS530 Link Pinouts
- V.35 Link Pinouts
- RS232 Null-Modem Cable Configuration
- V.35 Null-Modem Cable Configuration
- RS530 Null-Modem Cable Configuration
- RS530 To RS449 Conversion Cable
- V.11/X.21 Null-Modem Cable Configuration
- Index
- Warranty
Interface Pinouts
D.2
— IOLINK-520 & IOLINK-PRO00 Installation & Applications Guide
These modules may have either the UP/DOWN switch type or the ON/OFF slide switch
type. Each type is illustrated below.
CSU/DSU
LINE
1 2 3 4
Switches
up
down
Figure D-1 Rear View of ATL-CSU/DSU Link Module with UP/DOWN Switches
Figure D-2 View of ATL-CSU/DSU Link Module with Sliding ON/OFF Switches
When connecting two bridge/routers back-to-back with CSU/DSU link modules, a null-modem
cable is required to crossover the pins on the links. Crossing over the pins allows two
bridge/routers both configured as DTE interfaces to be connected together.
Switch number 1 determines whether the
ATL-
CSU/DSU link module will generate clocks or
receive clocks. When switch 1 is down (on), the normal position, the module receives clock
signals from the connected network. When switch 1 is up (up), the module will generate clocks.
When a pair of IOLINK routers are connected back-to-back with CSU/DSU link modules one
module must be set to generate clocks and one module must be set to receive clocks.
On 64 Kbps units only, switch number 3 determines the mode of the
ATL-
CSU/DSU. When
switch 3 is down (on), the
ATL-
CSU/DSU is in DDS (Digital Data Service) mode for normal
connection to the 64 Kbps digital service. When switch 3 is up (off), the
ATL-
CSU/DSU is in
LDM (Limited Distance Modem) mode for back-to-back connection with a null-modem cable.
On 56 Kbps units, the position of switch 3 is not a factor for back-to-back connection with a null-
modem cable. Switch 1 must still be set as noted above.
A DSU/CSU crossover cable would be constructed as follows: 1 --> 7
2 --> 8
7 --> 1
8 --> 2