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Overview
This chapter describes the PA-2CE1 port adapter and contains the following sections:
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Port Adapter Overview
The PA-2CE1, shown in Figure 1-1 and Figure 1-2, provide up to two channelized E1 (unbalanced
75-ohm or balanced 120-ohm) or ISDN PRI interfaces for connecting Cisco 7000 series routers to
channel service units (CSUs). Each 2CE1 interface can transmit and receive data bidirectionally at the
E1 rate of 2.048 megabits-per-second (Mbps).
Each 2CE1 interface connects to external networks through a single port that has a 15-pin, D-shell
receptacle. You must use G.703 serial interface cables to connect unbalanced 75-ohm or balanced
120-ohm 2CE1 interfaces to a CSU. 2CE1 interfaces are configurable for balanced and unbalanced
connections by setting jumpers on the 2CE1 printed circuit board. See the "Setting the PA-2CE1
Jumpers" section on page 3-8 for balanced and unbalanced 2CE1 jumper settings.
Note
While the VIP2 supports online insertion and removal (OIR), individual port adapters do
not. To replace port adapters, you must first remove the VIP2 from the chassis, then replace
port adapters as required.
The Cisco 7200 series routers support the OIR of all port adapter types.
Figure 1-1
OL-3519-01
Port Adapter Overview, page 1-1
LEDs, page 1-2
Cables, Connectors, and Pinouts, page 1-3
Port Adapter Slot Locations on the Supported Platforms, page 1-5
Identifying Interface Addresses, page 1-7
PA-2CE1—Faceplate View—PA-2CE1/PRI-75 Shown
C H A P T E R
PA-2CE1 Channelized E1 Port Adapter Installation and Configuration
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1-1
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