Line-by-Line Solutions

In addition to integrated access, the SpectraComm family supports independent line-by-line T3 broadband, T1/FT1 wideband, DDS/GDS narrowband and analog solutions.

The SpectraComm MS-2 shelves come in twelve models to support most central office and customer premises configurations for line-by-line access.

Line-by-Line Cards

SpectraComm 553 (SC 553) DSU Card

SC 553 Key Features:

·  Network Managed T1/FT1 CSU/DSU

·  Supports N x 56/64 kbps to 1.536 Mbps payload

·  In-band SNMP management via various diagnostic control channels

·  Optional DSX-1 cascade "drop and insert" port

·  Local or remote management

·  Auto configuration with SCM

The SpectraComm 553 is a rackmounted single channel T1/FT1 CSU/DSU offering highly cost-effective, direct line-by-line access to the T1 network. Occupying a single slot in the SpectraComm Shelf, the SC 553 supports T1 and FT1 services from 56 kbps to a full 1.544 Mbps. Network interface rates may be selected as multiples of either 56 kbps or 64 kbps to the full 1.536 Mbps payload. Connection to data terminal equipment is equally flexible, with support for a V.35 or an optional TIA/EIA-530/422 interface, plus an optional DSX-1 drop and insert interface. A flash memory architecture facilitates downline loading of future firmware upgrades.

SpectraComm 800 T3 (SC 800T3) DSU Card

SC 800T3 Key Features:

·  Full T3 (44.2 Mbps)

·  Full SNMP management via SCM

·  HSSI interface

·  Supports high speed router applications

·  Local or remote management

·  Supports SC 2000 Craft Port

·  Auto configuration with SCM

The SpectraComm 800T3 is an SNMP-managed T3 DSU supporting clear channel communications at 44.2 Mbps. This compact data set interfaces to the host computer using an industry standard HSSI connector. Two BNC connectors provide the DS3 connections to the network. Flash memory enables future firmware upgrades

SpectraComm 521A (SC 521A) DSU Card

SC 521A Key Features:

·  Network Managed DDS/GDS DSU

·  Supports all DDS data rates — 2.4 - 19.2 kbps, 56/64 kbps, 64 kbps clear channel

·  Extends SNMP management for remote SC 521A

·  Extended dynamic range

·  Supports line measurements

·  Interoperates with all standard DDS DSUs

·  Data Rate Adaption

·  Supports SC 2000 Craft Port

·  Auto configuration with SCM

The SpectraComm 521A is an all-rate, rackmounted, SNMP-managed DSU supporting a direct interface to standard and generic digital service networks. The SC 521A operates at line rates of 2.4 to 64 kbps in point-to-point and 2.4 to 56 kbps in multipoint applications.

SpectraComm 500A (SC 500A) DSU Card

SC 500A Key Features:

·  Supports all DDS data rates — 2.4 - 19.2 kbps, 56/64 kbps, 64 kbps clear channel

·  Automatic data rate selection simplifies service upgrades

·  Powerful diagnostic testing capabilities for rapid fault isolation and system restoral

·  Extended dynamic range for the best performance possible

The SpectraComm 500A is a non-network managed universal rate data service unit (DSU) for central site locations in digital service networks. It is fully compatible with GDC's DeskTop (DT) 500A, designed primarily for remote office locations, while supporting all standard subrates and both 56 kbps and 64 kbps (clear channel) high speed rates.

SpectraComm 202 (SC 202) Modem

SC 202 Key Features:

·  Custom VLSI technology yields superior performance and reliability

·  Advanced design ensures ease of installation and use

·  Simple option selection without complicated programming

·  Optional SNMP Management

·  Auto configuration with SCM

The SpectraComm 202 is a Bell 202-compatible modem for operation on 2-wire and 4-wire private lines, supporting point-to-point or multipoint operations with data rates up to 1800 bps. Custom Very Large Scale Integration (VLSI) provides the modem with advanced features while maintaining the best price performance available. The SC 202's options are set using a switch bank, the SCM card or SNMP Management.

SpectraComm Dual V.34 Modem Card

SpectraComm Dual V.34 Key Features:

·  Two high performance, high reliability V.34 modems on one card

·  Enhanced Security Features:

  - RADIUS Security

  - Patented Steadfast Security^®

  - Password, dial back and roving dial back security

·  MNP-10 cellular compatibility

·  Speeds up to 33.6 kbps with throughput of up to 128 kbps

The SpectraComm Dual V.34 delivers two high performance, high reliability V.34 modems on a single SpectraComm card for a total of 32 modems per 7-inch shelf. It is capable of transmitting synchronous or asynchronous data at speeds up to 33.6 kbps over dial-up or 2-wire private lines. State-of-the-art V.34 trellis code modulation along with powerful V.42/V.42 bis error correction and compression is the secret of the Dual V.34's superior performance. With advanced data compression techniques, it can achieve an effective throughput of up to 64 kbps in synchronous and 128 kbps in asynchronous applications.

SpectraComm V.F 28.8 / 33.6 Modem Card

SpectraComm V.F 28.8 / 33.6 Key Features:

·  Flash Memory for remote downline loading

·  Enhanced Security Features:

  - RADIUS Security

  - Patented Steadfast Security^®

  - Password, dial back and roving dial back security

·  Speeds up to 33.6 kbps with up to 128 kbps throughput

·  Dial Back up with ADR model

The SpectraComm V.F 28.8 / 33.6 is a high-performance, high reliability V.34 modem. It operates over the switched network, 2-wire leased lines, or, when equipped with the ADR (Auto Dial Restoral) option, as a 4-wire private line modem with automatic dial restoral. A member of GDC's family of high speed V.34 access products, it transmits synchronous or asynchronous data at speeds up to 33.6 kbps. With advanced compression techniques, it can achieve an effective throughput of up to 64 kbps in synchronous and 128 kbps in asynchronous applications. A choice of V.35 or TIA/EIA-530 interfaces eliminates the need for external interface converters when migrating to high speed applications.

The SpectraComm V.F 28.8 / 33.6 is specifically designed for businesses requiring a high degree of reliability in their data connections. State-of-the-art trellis code V.34 modulation along with powerful V.42/V.42 bis error correction and compression features ensures superior performance.

SpectraComm V.34 Dial Back Up

Key SC V.34 DBU Features:

·  Auto Dialing: TIA/EIA 602

NEBS Testing in progress

·  TIA/EIA-232 Interface

·  Same features as the SC V.F 28.8 / 33.6 Modem

The SpectraComm Dial Back-up Unit (SC V.34 DBU) provides dial back-up and dial restoral for the SpectraComm family. This mission critical functionality is mandatory for many applications.

SpectraComm V.34 4-port

The SpectraComm V.34 4-port is a combination of hardware and software features that allow the SC V.F 28.8 / 33.6 platform to act as a four port switch. This configuration allows a more cost-effective solution that allows one dial in line to access up to four different craft ports for the multiple port Out-of-Band Management (OBM) applications. The SC V.34 4-port provides four TIA/EIA-561 DTE interfaces. This is a security feature that requires the remote user to enter a modem or RADIUS password. When the remote user is authenticated, port one through four can be selected.

Introduction | Shelves and Enclosures | Integrated Access Solutions | Line-by-Line Solutions | Management and Security | SpectraComm Modems and CSU/DSUs At A Glance | General Specifications | Integrated Access Specifications | Line-by-Line Specifications | Modem Specifications | Product Literature