Cisco ATM Cable DS-3 & E3, 3m CAB-ATM-DS3/E3-OEM Manual De Usuario

The PA-MC-T3 contains the following features:

Transmits and receives data bidirectionally at the T3 rate of 44.736 Mbps (digital signal carried on 
a T3 line, digital signal level 3 [DS3]). 

The T3 connection, provided by way of two female BNC connections for transmit (TX) and receive 
(RX), requires RG-59 coaxial cable that has an impedance of 75 ohms. 

Supports RFC 1406 and RFC 1407 (CISCO-RFC-1407-CAPABILITY.my). For RFC 1406, Cisco 
supports all tables except the Frac table. For RFC 1407, Cisco supports all tables except the FarEnd 
tables. (For information on accessing Cisco MIB files, refer to the Cisco Management Information 
Base (MIB) User Quick Reference

PA-MC-T3 microcode is loaded into and operates from DRAM (or SDRAM) configuration and is 
determined by the VIP model on which the PA-MC-T3 is installed.

On the Catalyst RSM/VIP2, PA-MC-T3 microcode is loaded into and operates from DRAM on the 
Catalyst RSM/VIP2-40. 

The PA-MC-T3 T3 port is designed to receive and transmit at the DSX-3 level while driving and 
receiving from a 75-ohm coaxial cable (ATT 728A type coax). The T3 port connects directly to any 
equipment with DSX-3-level BNC connectors. 

 lists the specifications the T3 front end is designed to meet.

Line rate

44.736 Mbps (±20 ppm)

Line code

B3ZS (bipolar with three-zero substitution)

Impedance

75 ohms

Pulse shape

ANSI T1.102, pulse amplitude is between 0.36 and 0.85 volts (V) peak

Input signal

DSX-3 (9.7 dB to –11.8 dB)

Output signal

DSX-3, able to drive 450 feet (135 meters) of 75-ohm coaxial cable (728A or 
equivalent) and meet pulse shape template at the line side