4 Channelized T1 Port Adapter Installation and Configuration
Port Adapter Installation Prerequisites
distributed services. The VIP2-20(=), which has 1 MB of SRAM and 16 MB of DRAM, supports
two installed 2CT1 port adapters that are running ISDN PRI or channelized T1 with distributed
switching. The VIP2-15(=), which has 1 MB of SRAM and 8 MB of DRAM, supports one installed
2CT1 port adapter that is running ISDN PRI or channelized T1 without distributed switching.
Cisco 7200 series routers require a minimum of 32 MB of DRAM to support up to five installed
2CT1 port adapters that are running ISDN PRI or channelized T1.
For port adapter hardware and memory configuration guidelines for the Cisco 7200 series routers,
refer to the document Cisco 7200 Series Port Adapter Hardware Configuration Guidelines.
List of Parts and Tools
You need the following parts and tools to install a port adapter. If you need additional equipment,
contact a service representative for ordering information.
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PA-2CT1/PRI(=), 2CT1 port adapter.
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Your own external CSUs (channel service units).
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VIP2 (for installation in a Cisco 7000 or Cisco 7500 series chassis only). (For specific VIP2
models that support the 2CT1 port adapter, see the “Software and Hardware Requirements”
section on page 3.)
•
T1 interface cables (see the “2CT1 Port Adapter Cables and Pinouts” section on page 11.)
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Number 1 Phillips and a 3/16-inch, flat-blade screwdriver.
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Your own ESD-prevention equipment or the disposable grounding wrist strap included with all
upgrade kits, field-replaceable units (FRUs), and spares.
Safety Guidelines
Following are safety guidelines that you should observe when working with any equipment that
connects to electrical power or telephone wiring.
Safety Warnings
Safety warnings appear throughout this publication in procedures that, if performed incorrectly,
might harm you. A warning symbol precedes each warning statement.
Warning
This warning symbol means danger. You are in a situation that could cause bodily injury.
Before you work on any equipment, be aware of the hazards involved with electrical circuitry and
be familiar with standard practices for preventing accidents. To see translations of the warnings that
appear in this publication, refer to the Regulatory Compliance and Safety Information document that
accompanied this device.