Datasheet

Installing 2T16S Network Processor Modules in the Cisco 4000 Series

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Software Compatibility

Network processor modules must be supported by the appropriate level of system software. The

minimum system software version for the 2T16S network processor module is as follows:

• 2T16S-RS232 and 2T16S-V.35—Cisco IOS Release 11.2(3)P for synchronous and Cisco IOS

Release 11.2(4)P for asynchronous operation

• 2T16S-X.21—Cisco IOS Release 11.2(5)P

• 2T16S-232V35 and 2T16S-232X21—Cisco IOS Release 11.2(5)P

If you have an earlier version of Cisco IOS software, contact Cisco Customer Service (see the section at

the end of this document, “Cisco Connection Online”) or your local sales representative to order the

appropriate version.

Memory Requirements

To successfully operate a system with 6 or more ports, the system must contain at least 4 MB of shared

memory. To successfully operate a system with 24 or more ports, the system must contain at least 8 MB

of main memory DRAM.

Memory requirements for each 2T16S network processor module follow:

• 275 KB (0.275 MB) main memory

• 0.63 MB shared memory

Safety with Electricity

Warning

Before working on equipment that is connected to power lines, remove jewelry (including rings,

necklaces, and watches). Metal objects will heat up when connected to power and ground and can

cause serious burns or weld the metal object to the terminals.

Warning

To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to

telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain

TNV circuits. Both LAN and WAN ports may use RJ-45 connectors. Use caution when connecting

cables.

Warning

Hazardous network voltages are present in WAN ports regardless of whether power to the router is

OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching

cables, detach the end away from the router first.

Warning

The ISDN connection is regarded as a source of voltage that should be inaccessible to user contact.

Do not attempt to tamper with or open any public telephone operator (PTO)-provided equipment or

connection hardware. Any hardwired connection (other than by a nonremovable,

connect-one-time-only plug) must be made only by PTO staff or suitably trained engineers.

Follow these guidelines when working on equipment powered by electricity: