Specifications

Table 2 lists the product number and description, and Table 3 lists the LED port indicators and status for the Cisco T3/E3 Service Module.

Table 2.       Product Name and Description

Hardware Specifications

DS-3/E3 Specifications

●   DSX-3 level interface with dual female 75-ohm BNC coaxial connectors per port (separate RX and TX)

●   Full-duplex connectivity at DS-3 rate (44.736 MHz)

●   Full-duplex connectivity at E3 rate (34.368 MHz)

●   Scrambling and subrate support of major DSU vendors

●   Line build-out programmable for up to 450 feet of 734A or equivalent coaxial cable or up to 225 feet for 728A or equivalent coaxial cable

●   C-bit or M23 framing for T3; bypass and G.751 framing for E3 (software selectable)

●   Binary three-zero substitution (B3ZS) (T3) or high-density bipolar with three zeros (HDB3) (E3) line coding

●   Support for 16- and 32-bit CRC (16-bit default)

●   DS-3 FEAC channel support

●   Twenty-four-hour history maintained for error statistics and failure counts

●   DS-3 alarm and event detection (once-per-second polling)

●   AIS

●   OOF

●   Line code violation (LCV)

●   Excessive zeros (EXZ)

●   Far-end receive failure (FERF)

Table 3.       LED Port Indicators and Status