User guide

Preparing to Install the Cisco 2500 Series Access Server 2-11
Network Connection Considerations
You can use the following equipment to connect to the Ethernet AUI port:
• An Ethernet AUI cable connected to a transceiver
• An Ethernet transceiver connected directly to the access server’s AUI port
The connection to the AUI port can be attached using one of two connector types, as
follows:
• Slide latch connectors
• Jackscrew connectors
Note Ethernet cables are not shipped as standard with the access server.
Token Ring Connections
The Token Ring port is located on the left of the rear panel and is labeled TOKEN RING.
Use a standard 9-pin Token Ring lobe cable (not supplied) to connect the access server
directly to a media attachment unit (MAU).
Synchronous Serial Connections
The synchronous serial interface ports are located on the rear of the access server to the
right of the Ethernet or Token Ring connector. The ports are labeled SERIAL 0 and
SERIAL 1 (from left to right when facing the rear panel). The serial ports are 60-pin,
D-type connectors. All serial interfaces (except the EIA-530) can be configured as DTE or
DCE, depending on the attached cable. All DTE serial ports require that external clocking
be provided by a channel service unit/data service unit (CSU/DSU) or other DCE device.
You must use a special serial cable to connect the access server to a modem or CSU/DSU.
This cable is available from Cisco and is usually ordered with the system. The cable uses a
DB-60 connector on the chassis end. See the appendix “Cable Specifications” for cable
pinouts. For ordering information, contact a customer service representative.