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1-Port Clear Channel DS3/E3 GPIM Network Interface Specifications

 

The 1-Port Clear Channel DS3/E3 Gigabit-Backplane Physical Interface Module (GPIM) provides the network interface specifications for DS3 or E3 modes, listed in Table 1.

Table 1: 1-Port Clear Channel DS3/E3 GPIM Network Interface Specifications

Description

DS3 Mode

E3 Mode

Network Interface Specifications

Line encoding

B3ZS

HDB3

Framing

  • M23 (default)

  • C-bit

G.751 (default)

Substrate and scrambling

Vendor algorithms supported:

  • Verilink

  • Kentrox

  • Digital Link

  • Larscom

  • Adtran

Vendor algorithms supported:

  • Kentrox

  • Digital Link

Network alarms

Supported in accordance with the ANSI specification:

  • Loss of Signal (LOS)

  • Out of Frame (OOF)

  • Loss of Frame (LOF)

  • Alarm Identification Signal (AIS)

  • Remote Defect Identification (RDI)

Supported in accordance with the ITU-T specification:

  • LOS

  • OOF

  • AIS

  • RDI

  • Phase Locked Loop (PLL)

Error counters

Incremented during a periodic 1-second polling routine:

  • Line Code Violations (LCV)

  • P-bit Code Violations (PCV)

  • C-bit Code Violations (CCV)

  • Line Errored Seconds (LES)

  • P-bit Errored Seconds (PES)

  • C-bit Errored Seconds (CES)

  • Severely Errored Framing Seconds (SEFS)

  • P-bit Severely Errored Seconds (PSES)

  • C-bit Severely Errored Seconds (CSES)

  • Unavailable Seconds (UAS)

Incremented during a periodic 1-second polling routine:

  • Frame Alignment Error (FAE)

  • Bipolar Coding Violations (BCV)

  • Excessive Zeros (EXZ)

  • LCV

  • LES

  • SEFS

  • UAS

HDLC Features

MTU

Default (4474 bytes) or maximum jumbo (up to 9192 bytes)

Default (4474 bytes) or maximum jumbo (up to 9192 bytes)

Shared flag

Supported

Supported

Idle flag/fill (0x7e or all ones)

Supported

Supported

Counters

Runts, giants

Runts, giants