Specifications

2-16 Cisco 2500 Series Hardware Installation

Preparing for External Connections

Step 5 On hub models, connect RJ-45 cables from the Ethernet ports to your external

Ethernet devices. If you have a router model go to Step 7, and if you have a access

server, omit this step and continue with Step 6.

Step 6 On access server models, connect modular SCSII-type breakout cables (available

from Cisco Systems) to the 68-pin SCSI ports. If you have a 68-pin-to-RJ-45

breakout cable, use RJ-45-to-DB-25 adapters to connect the breakout cable to

your serial devices. Or, if you have a 68-pin-to-DB-25 breakout cable, connect the

DB-25 connector directly to your serial devices. Refer to the appendix “Cable

Pinouts” for more information. Continue with Step 9.

Caution Make sure that the SCSI connector on the breakout cable is securely connected

to the SCSI connector on the access server. A short could occur which might damage your

access server if the connection is disconnected.

Step 7 The Basic Rate Interface (BRI) port, a female RJ-45 connector on models 2503

and 2504 (see Figure 2-21), is located on the chassis rear panel between the serial

1 and console ports. On the Cisco 2516, the BRI port is located between the serial

and Ethernet ports.

On the Cisco 2516, set the MDI/MDI-X switch to MDI-X to conﬁgure the hub as

a standalone hub. Set the MDI/MDI-X switch to MDI to conﬁgure Ethernet port

6 on the hub for connecting to another hub.

Step 8 Using the appropriate cable, connect the BRI port to the Integrated Services

Digital Network (ISDN) through the NT1. The common carrier will provide the

NT1 connection worldwide, except in North America, where the NT1 is customer

owned.