Access Navigator DCS Service Manager

Quick Resources: PDF Brochures -- Product Guides

Product Overview

The Access Navigator DCS Service Manager provides a complete solution for managing 4 to 32 T1 access connections in one highly integrated product. With the functions of a 1/0 digital cross connect system, plus demarcation testing, carriers are able to decrease maintenance costs and labor, while increasing service availability. Fractional voice and data services from multiple customers are combined by the Access Navigator to save recurring transmission costs and capital costs on switch or router ports.

With both NEBS and customer premises certifications, the Access Navigator can be located in carrier racks or on customer walls. The 32 port system occupies only 1.5 rack units. Integrated testing and optional common equipment redundancy ensure carrier-class service availability. Space, power, and installation labor are dramatically reduced in comparison to old generation digital cross connect and CSU or NIU shelves. Additional Quad T1 Cards can be installed while the Access Navigator is in service to provide from 4 to 32 T1/CSU connection ports.

Access Navigators provide management access via Ethernet SNMP, Telnet CLI, and RS-232 CLI. Software is updated in-service via Ethernet or RS-232. Flow-through provisioning and testing control over ESF T1 connections, from the Access Navigator to Carrier Access' Access Bank II units, reduces truck rolls and improves voice and data service availability at customer locations.

Access Navigator DCS Service Manager Applications

Features	Advantages
T1 Service POP-in-a-Box	Fully integrated T1 access management for carriers reduces recurring costs and improves T1 service protection at customer locations.
End-Office Bandwidth and Connectivity Management:	Bandwidth consolidation, provisioning and protection reduces line costs and implements T1 back up.
DCS Host Control of Access Bank IIs	Flow-through remote management and bandwidth grooming of Access Bank IIs reduces installation and service labor of voice and fractional T1 services.
PCS and Cellular Site T1 Bandwidth Management	Drop, groom, and test multiple T1 connections between cell sites and hubs saves transmission costs and service labor.

Technical Specifications

DCS Operation

Up to 32 T1s per system
Cross connects at DS0 level · Cross connects up to 24 contiguous DS0s between T1s
Redundant controller and power feed

DS1 Interface

Quad T1s per line card, hot swappable
Line rate: 1.544 Mbps +32 ppm
Line code: B8ZS and AMI
Framing: D4 (SF) and ESF
DS1 receive sensitivity: -28dB to +3dB
Line build-outs: DSX-1 (0 - 550 ft) CSU (0 dB, -7.5 dB, -15 dB, -22.5 dB)
ANSI T1.403 Sec 6 & 7 (jitter, pulse mask transmission, receive sensitivity, framing formats)
Built-in CSU with loopback and BERT for testing the T1s

System Clocking

Primary and secondary sources from DS1s, external clock source (e.g. BITS) or internal clock (minimum Stratum 4)
Automatic system clock switching and hold-over

Signaling

Robbed-bit and clear channel connections at DS0 level
Supports FXS/FXO loop-start and ground-start robbed bit signaling
Supports E&M robbed bit signaling

Management

Command Line Interface (CLI) for provisioning and maintenance
Ethernet SNMP uses Bellcore standard MIB for DS1 interfaces (RFC-1406)
Ethernet Telnet support for remote CLI
RS-232 interface for local CLI
TFTP and Xmodem support for flash memory software upgrades

Alarms

Critical, Major and Minor alarm levels
DS1 alarms for LOS, LOF, receive AIS, and receive RAI
Output signal: relay contact closures and LED indication
Alarm inputs from dry contact closures

Compliance

FCC Part 15 and Part 68
UL 1950 Edition 3
Bellcore® GR-63 (NEBS)
Bellcore® GR-1089 (NEBS) for equipment Type 2 and 4
AT&T 62411 (Stratum 4 enhanced T1 CPE)
ANSI T1.403 and T1.107a

Power

Input power: -42 to -60 VDC @ 1.5A
Dual feed DC power inputs
Power dissipation: 65 watts, fully equipped
Solid-state (fuseless) overvoltage and overcurrent protection

Environmental

Operating temperature: -5° to +45° C (23° to 113° F), up to +55°C short term (NEBS)
Solid-state over-temperature protection
Relative humidity: 0 to 95%, non-condensing
No fans; passive thermal management

Cables

Two (2) 10 ft. DSX-1 cables per Access Navigator (Carrier Access P/N 005-0025)

Physical

Dimensions: 17" x 13.5" x 2.63"
Mounts in 19" and 23" racks
Optional wall mount brackets