LOOP-T 2500

LOOP-T 2500

FT1 CSU/DSU SERIES - RACK MOUNT

(OLD DESIGNATION: T 500)

FEATURES

DSU functionality integrated with an intelligent CSU in a compact package

Controller card allows front panel operation

SNMP Management and terminal console ports

Connection to LAN/WAN, CAD/CAM, or Hosts to T1 Network Services

Compliance with ANSI T1.403, AT&T PUB 54016 and 62411

2-line by 40-character LCD

Space for 16 plug-in cards

Optional Ethernet port

Optional connection to SNMP and Telnet

DESCRIPTION

Loop Telecom's Loop-T 2500 FT1 CSU/DSU series provide an economic solution to T1 network access cost, when only a partial of 24 DS0 channels is needed. This product series support Extended Superframe Format (ESF) which makes possible continuous error checking, performance polling, and in-service diagnostics. With DTE port operating from 56 to 1536 Kbps, Loop-T 2500 FT1 CSU/DSU enables users to interconnect LANs and WANs, CAD and CAM, videoconference, mainframe hosts, and others.

Loop-T 2500 FT1 CSU/DSU series support local control and diagnostics using 2-line by 40-character LCD and keypads on a shared central controller card. This enables users to execute in-service diagnostics and fault isolation. Each plug-in also provides 10 LEDs for both line side and DTE side status indicators. Using SNMP Network Management Systems and Telnet connection on the shared controller card, user can remotely control and diagnose Loop-T products from anywhere. Using Ethernet, SLIP, Telnet, or SNMP, controller cards from different racks can be daisies chained and managed from a central network manager.

Ordering information to specify options, choose from list below:

Model	Description
Loop-T 2500-R-DTE	Plug-in card
Loop-T 2500-R-DTE-J	Plug-in card with advanced jitter
Loop-T 2500-RC	16-solt rack cage
Loop-T 2500-CC	Controller without SNMP
Loop-T 2500-CC-SNMP	Controller with SNMP

Where DTE =

11 for V.35 DTE interface with M34 connector

22 for V.35 DTE interface with DB25 connector

33 for EIA530 DTE interface

44 for X.21 DTE interface

55 for RS232 DTE interface

66 for RS449 DTE interface with modular adapter

Example

Loop-T 2500-R-11 = V.35 DTE interface with M34 connector

Loop-T 2500-R-33-J = EIA530 DTE interface with advanced jitter

LOOP-T 2500 FT1 CSU/DSU SERIES PRODUCT SPECIFICATION (RACK)

Network Line Interface (DS-1 Interface)

Line Rate	1.544 Mbps +/- 32 ppm	Framing	D4 / ESF (selectable)
Line Code	AMI / B8ZS (selectable)	Connector	RJ-48
Input Signal	DSX-1 from 0 to -26 dB W/ALBO	Output Signal	DSX-1 w/ 0, -7.5, -15 dB LBO (selectable)
Surge Protection	FCC Part 68 subpart D	Pulse Template	Per AT&T TR 62411

Customer DTE Interface

A. Single DTE Data Port

Data Rate - N * (56 or 64) Kbps (n = 1 ~ 24)

Connector - V.35 (M34 or DB25), EIA530 (DB25), X.21 (DB15), RS232 (DB25), RS449 (via DB37 adapter)

B. DSO Mapping

Maps - 2 sets of DSO map with provision for automatic switching between the 2 maps

Remote Send - Send active DS0 maps to remote site (in ESF mode only)

Performance Monitor

Performance Memory - The last 24 hours performance in 15-minute intervals

Monitor Registers - Line, user, and remote site (in ESF mode only)

Performance Reports - Report includes Date & Time, Errored Second, Unavailable Second, Bursty Errored Second, Severe Errored Second, Controlled Slip Second, and Loss of Frame Count.

Alarm History - Report includes Date & Time, Alarm Type (i.e. Master Clock Loss, Yellow Alarm, AIS, LOF, BPV, ES, CSS), and Location (i.e. line, DTE).

Alarm Queue - Contains 40 alarm records which record the latest alarm type, and date & time

PRM Performance - ANSI T1.403 PRM (Performance Report Messages) (selectable)

System Configuration Parameters (All in non-volatile memory)

Active Configuration - Current working configuration

Stored Configuration - User stored configuration

Default Configuration - Manufacture default configuration (permanent)

Console Ports on a shared Controller Card

Connector	RJ-11 at front	DB25 at rear	RJ-45 at rear
Electrical	RS232	RS232	10 Base-T Ethernet
Protocol	VT-100 Menu driven	SLIP/Telnet/SNMP	Telnet/SNMP

Diagnostics Test

Loopbacks - Line Loopback, Payload Loopback, Local Loopback, and DTE Loopback

Test Pattern - 220 - 1 QRSS, 3-in-24, 1-in-8, 2-in-8, 1:1 patterns

Idle Channel - Use of idle channel to perform QRSS diagnostic test

Remote Loopback - AT&T inband Loopback & Payload Loopback, ANSI Line Loopback, Payload Loopback

DTE Channel Loopback (V.54 or Loop proprietary)

Front Panel

Keypad on Controller Card - 5 keys: left arrow, right arrow, ESC, ENTER, and ACO (Alarm Cut-Off)

LCD/LED on Controller Card - 2-line by 40-character LCD, one LED for ACO

LED on each plug-in - 10: Power, Line [SYNC/TEST, LOF, BPV, YEL/AIS], DTE [TEST, TD, RD, RTS, CLK-LOSS]

Physical/Electrical

Dimensions - 17" x 8¾" x 11" (WxHxD) each rack cage can have 16 plug-in units, plus controller card

Power - 24 - 48 Vdc, 5 watts per card, 85 watts max per cage

Mounting - Desk-top stackable, 19/23 inch rack mountable

Temperature range - 0-50°C

Humidity - 0-95%RH (non-condensing)

Compliance

AT&T TR 54016 - Requirements for interfacing digital terminal equipment to services employing the ESF

AT&T TR 54019 - International ACCUNET digital services description and network interface specifications

AT&T TR 54019A - Addendum to TR54019

ANSI T1.403-1989 - Carrier to customer installation - DS1 metallic interface

FCC Part 15 Class A

UL1459

CSA 22.2 No. 225

FCC Part 68

DOC-CS-03

©1997 Loop Telecommunication International, Inc. All Rights Reserved. C2