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1-Port Clear Channel DS3/E3 GPIM

1-Port Clear Channel DS3/E3 GPIM Overview

The 1-Port Clear Channel DS3/E3 GPIM functions as a clear channel interface that can support DS3 (T3) or E3 line rates of 44.796 or 34.368 Mbps, respectively. The device does not support channelization, but it supports a subrate DS3/E3 configuration. The DS3/E3 interface is a popular high-bandwidth WAN interface for large enterprise branch locations that enables high-quality voice, video, and data applications with reduced latency. The clear channel implementation provides such features as subrate and scrambling options used by major DSU vendors. The interface also supports loopback, bit error rate test (BERT), and far-end alarm and control (FEAC) diagnostic capabilities. It supports Frame Relay, Point-to-Point Protocol (PPP), and High-Speed Data Link Control (HDLC) serial encapsulation protocols.

The 1-Port Clear Channel DS3/E3 GPIM is suitable for:

  • Branch office and regional sites for medium-sized to large enterprises.

  • Corporate headquarters for medium-sized enterprises.

The 1-Port Clear Channel DS3/E3 GPIM supports IP configurations. Using the command-line interface (CLI), you can configure the 1-Port Clear Channel DS3/E3 GPIM to operate in either DS3 or E3 mode.

The 1-Port Clear Channel DS3/E3 GPIM can be plugged into any GPIM slot on the services gateway. Figure 1 shows the front panel of the 1-Port Clear Channel DS3/E3 GPIM..

Figure 1: 1-Port Clear Channel DS3/E3 GPIM Front Panel1-Port Clear Channel DS3/E3 GPIM Front Panel
Note:

Only the SRX650 Services Gateway supports hot-swappable functionality for GPIMs. The SRX550 Services Gateway does not support hot-swappable functionality for GPIMs.

1-Port Clear Channel DS3/E3 GPIM Components

The 1-Port Clear Channel DS3/E3 GPIM contains the components listed in Table 1.

Table 1: 1-Port Clear Channel DS3/E3 GPIM Components

Component

Location

Description

ONLINE/OFFLINE button

Only the SRX650 Services Gateway supports hot-swappable functionality for GPIMs. The SRX550 Services Gateway does not support hot-swappable functionality for GPIMs.

Right side of the GPIM

Use the ONLINE/OFFLINE button to gracefully shut down the GPIM. Press down and hold the button for 4 to 5 seconds; then release. The GPIM gracefully shuts down and turns off the power supply units (PSUs).

To power up the GPIM (if the Services and Routing Engine [SRE] is off), press and hold the ONLINE/OFFLINE button for 4 to 5 seconds.

TX and RX coaxial connectors

Middle/right of the GPIM

Dual 75-ohm BNC coaxial socket connectors: TX (transmit) and RX (receive).

Captive screws

One on each side of the GPIM

Use the captive screws to hold the GPIM in place.

1-Port Clear Channel DS3/E3 GPIM Key Features

The 1-Port Clear Channel DS3/E3 Gigabit-Backplane Physical Interface Module (GPIM) provides the following key features:

  • Framed and unframed DS3/E3 modes

  • Line encoding for DS3/E3 modes

  • Support for Frame Relay, PPP, and HDLC serial encapsulation protocols

  • External and internal clocking support

  • Support for DS3/E3 network alarms

  • Support for chassis clusters

  • Support for anti-counterfeit check

  • Loopback (local, remote, and payload) and BERT, PRBS, and QRSS diagnostics support

  • Support for generation and detection of loopback control codes (line-loopback activate and deactivate) and FEAC codes

  • Maximum transmission unit (MTU) size of 4474 bytes (default) and 9192 bytes (maximum)

1-Port Clear Channel DS3/E3 GPIM Hardware Specifications

The 1-Port Clear Channel DS3/E3 Gigabit-Backplane Physical Interface Module (GPIM) has the hardware specifications listed in Table 2.

Table 2: 1-Port Clear Channel DS3/E3 GPIM Hardware Specifications

Description

Value

Dimensions (H x W x L)

0.76 in. x 6.72 in. x 8.52 in.(19.2 mm x 170.8 mm x 216.4 mm)

Weight

1.11 lb (0.504 kg)

Connector type

DSX3 interface with dual 75-ohm BNC coaxial socket connectors (separate Tx/Rx)

Form factor

Single-high, single-wide GPIM

Environmental operating temperature

32°F through 104°F (0°C through 40°C)

Storage temperature

-40°F through 158°F (-40°C through 70°C)

Relative humidity

5% to 90% noncondensing

Altitude

Up to 10,000 ft (3,000 m)

1-Port Clear Channel DS3/E3 GPIM LEDs

The 1-Port Clear Channel DS3/E3 Gigabit-Backplane Physical Interface Module (GPIM) has the LEDs described in Table 3.

Table 3: 1-Port Clear Channel DS3/E3 GPIM LED States

LED

Color

State

Description

STATUS

Green

On

GPIM is online and functioning normally.

Amber

On

GPIM is starting up, running diagnostics, or shutting down.

Red

On

GPIM has failed.
 

Off

GPIM has no power and can be removed safely.

LOS

Amber

On

Loss of signal online.

LPBK

Amber

On

Loopback is on.

AIS

Amber

On

Port is receiving alarm indication signal (AIS) alarm.

RDI

Amber

On

Port is receiving remote defect indication (RDI) alarm.

ALARM

Green

On

There are no alarms or defects.

Red

On

An alarm or a defect is present.

OOF

Amber

On

Out-of-frame (OOF) RX multi-frame is not aligned.

1-Port Clear Channel DS3/E3 GPIM Supported Standards

The 1-Port Clear Channel DS3/E3 Gigabit-Backplane Physical Interface Module (GPIM) supports the following standards:

  • DS3 mode standards:

    • ANSI TI.102, TI.107, T1.404

    • Telecordia GR 499-CORE, GR 253-CORE, GR 449-CORE

    • Telecordia TR-TSY-000009

    • AT&T Technical Reference 54014

  • E3 mode standards:

    • ITU G.751, G.823, G.703

    • Telecordia GR 499-CORE

1-Port Clear Channel DS3/E3 GPIM Supported Loopback Diagnostics

The 1-Port Clear Channel DS3/E3 Gigabit-Backplane Physical Interface Module (GPIM) has the following loopback diagnostics:

  • DS3 mode: local, remote, payload

  • E3 mode: local and remote

  • Test patterns (BERT):

    • All ones

    • All zeros

    • Alternating ones and zeros (AA/55)

    • PRBS 2^15-1 (as specified in ITU-T 0.151)

    • PRBS 2^20-1 (as specified in ITU-T 0.153)

    • PRBS 2^23-1 (as specified in ITU-T 0.151)

    • PRBS 2^9-1

    • PRBS 2^11-1

    • PRBS 2^29-1

    • PRBS 2^31-1

    • QRSS 2^20-1 (as specified in ITU-T 0.151)

  • BERT results must be in the following form:

    • Received bit count

    • Received error count

In conformance with ANSI T1.107-1995, the 1-Port Clear Channel DS3/E3 GPIM supports both generation and detection of FEAC codes, as well as line-loopback activate and deactivate control codes.

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 4.

Table 4: 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

1-Port Clear Channel DS3/E3 GPIM Basic Configuration

To enable the 1-Port Clear Channel DS3/E3 GPIM installed on the SRX Series Services Gateway, you must configure its properties. You can perform the basic configuration tasks using the CLI. In addition, you can configure a wide variety of options that are not encountered frequently.

Using the CLI

To perform basic configuration for the 1-Port Clear Channel DS3/E3 GPIM and to configure network interfaces for the services gateway with the CLI:

  • Verify that the 1-Port Clear Channel DS3/E3 GPIM is installed on the services gateway:

    show chassis hardware

  • Verify the FPC status of the interface:

    show chassis fpc

  • Verify the PIC status:

    show chassis fpc pic-status

  • Set the DS3/E3 port mode; for example, DS3 mode:

    set chassis fpc <fpc no> pic 0 port 0 framing t3/e3

    Note:

    By default, the PIC comes up in DS3 mode and the t3-x/y/z physical interface is created. The port mode chosen for t3 is IFDP_T3, and the port mode chosen for e3 is IFDP_E3.

  • Assign the port an IP address:

    set interfaces t3-3/0/0 unit 0 family inet address interface address/destination prefix

  • Assign MTU values:

    set interfaces t3-3/0/0 unit 0 family inet mtu mtu values

  • Enable/disable unframed DS3 mode; for example, unframed:

    set interfaces t3-3/0/0 t3-options unframed

  • Set encapsulation:

    set interfaces t3-3/0/0 encapsulation cisco-hdlc

  • Add or select a security zone; for example, trust:

    set security zones security-zone trust interfaces t3-3/0/0.0 host-inbound-traffic system-services all

  • Add or select security zones for host inbound traffic:

    set security zones security-zone trust interfaces t3-3/0/0.0 host-inbound-traffic protocols all

  • Set security policies:

    set security policies default-policy permit-all